NEED HELP ASAP 50 POINTS WILL MARK BRAINLIEST!

NEED HELP ASAP 50 POINTS WILL MARK BRAINLIEST!
NEED HELP ASAP 50 POINTS WILL MARK BRAINLIEST!
NEED HELP ASAP 50 POINTS WILL MARK BRAINLIEST!

Answers

Answer 1
What is this I would help if I had some directions
Answer 2

Answer:

156748

Explanation:

The first number is on the magnetism card 1

The combination  contains only the numbers found on the cards showing techniques to separate mixtures 1,5,6,7,8

The last number is on the filtering card

The red is in the middle half of 8 is 4


Related Questions

in what two ways do minerals form​

Answers

Answer:

Minerals can form in three primary ways being precipitation, crystallization from a magma and solid- state transformation by chemical reactions (metamorphism). Mineral Precipitation is when a mineral is formed by crystallization from a solution. Examples include quartz, halite (table salt), calcite, and gypsum.

Answer:

When magma cools slowly, deep below the surface, it has time to form large crystals in regular patterns. The second way that minerals form is through solutions. (A solution is when one substance is dissolved uniformly in a liquid.) When elements and compounds leave the solution, they can crystalize.

what is wind in more than 15 words?

Answers

Answer:

Wind is Air in a natural motion, as that moving horizontally at any velocity along the earth's surface.

For each of the following questions give the name of an element from period 2 lithium to neon which matches the description elements may be used once more than once or not at all
a) an element which has atoms with a full outer shell of electrons
b) an element which exists as both diamond and graphite
c) an element that reacts vigorously with cold water
d) a soft metallic element which is stored in oil
PLEASEEE

Answers

The elements of period 2 that satisfy the descriptions are;

a) Neon

b) carbon

c) sodium

c) sodium

What is the periodic table?

We know that the periodic table is an arrangement of the elements in the order of their reactivity. We know that the elements that we have are arranged into groups and periods.

The elements that are in the same group do have similar chemical properties while the elements that are in the same period do have the same number of shells. The properties of the elements in a periods tends to change across the period.

Learn more about periodic table:https://brainly.com/question/11155928

#SPJ1

This unit discusses in detail the role of catalysts to lower the activation energy of reactions. The term catalyst appears in nonscientific discussions to refer to something that provokes or speeds significant change or action. Consider this example from the 2006 Associated Press article "Chernobyl cover-up a catalyst for glasnost":

"For the Soviet Union, Chernobyl was a catalyst that forced the government into an unprecedented show of openness that paved the way for reforms leading to the Soviet collapse"

Discuss how this scientific term has made its way into common usage. Does the term catalyst carry the same meaning in regular usage? How is it used differently in a scientific context compared to a nonscientific contexte​

Answers

Answer:

It can be brought into regular conversation easily I feel it means to "provoke" or "speeds significant change or action" I can see someone saying that in a conversation, "chlorine acts as a catalyst promoting the breakdown of ozone".

I would say it would take the same meaning depending on how you say it and when and what the context of what you're saying it in. 

For scientists, it means to change quickly. For someone who says it in a conversation may be saying to stop provoking someone. 

Explanation:

Work out the empirical formula of a compound that contains 35% of nitrogen , 5% of hydrogen and 60% of oxygen.

Answers

Answer:

[tex]H_5N_5O_6[/tex]

Explanation:

Hello there!

In this case, for the determination of empirical formulas, it is firstly necessary to assume the given percentages of the constituent atoms as the masses so we can compute their moles in the formula:

[tex]n_N=\frac{35gN}{14.01g/mol} =2.5molN\\\\n_H=\frac{5g}{1.01 g/mol}=5molH\\\\n_O=\frac{60g}{16 g/mol} =3molO[/tex]

Thus, we need to divide the resulting moles, by the fewest ones (those of nitrogen) in order to determine the coefficients in the formula:

[tex]N:\frac{2.5}{2.5}=1\\\\H:\frac{5}{2.5}=2\\\\O:\frac{3}{2.5} =1.2[/tex]

However, we need to turn all these numbers, whole numbers, so we multiply by 5 to get:

[tex]H_5N_5O_6[/tex]

Best regards!

Which of the following is a neutralization reaction?

a
SiCl4 + 4 H2O → H4SiO4 + 4 HC

b
HCl + NaOH → NaCl + H2O

c
6 CO2 + 6 H2O → C6H12O6 + 6 O2

d
2Al + 6HCl → 2AlCl3 + 3H2

Answers

Answer:

B

Explanation:

B, Hcl + NaoH = NaCl + H2O

do i have to know the chemical and physical properties of alloys? only chemistry students answer this.

Answers

Answer:

yes you do so you know how strong it is how maluble it's is so it can be customised to it's specific use

Answer:

alloy's properties are usually different from those of its component elements. Alloy constituents are usually measured by mass. Unlike pure metals, most alloys do not have a single melting point; rather, they have a melting range in which the substance is a mixture of solid and liquid.

physical properties of alloys:-

Alloy steels have a wide range of special properties, such as hardness, toughness, corrosion resistance, magnetizability, and ductility. Nonferrous alloys, mainly copper–nickel, bronze, and aluminum alloys, are much used in coinage.

chemical properties of alloys:-

Pure metals are useful but their applications are often limited to each individual metal's properties. Alloys allow metal mixtures that have increased resistance to oxidation, increased strength, conductivity, and melting point; Essentially any property can be manipulated by adjusting alloy concentrations.

dnt learn all thr properties.

these are the main properties..u can learn thse only. hope it will help u

Dipole-dipole interactions are (weaker than, stronger than, equal to) hydrogen bonds.

Answers

Answer and Explanation:

Dipole-Dipole interactions are weaker than hydrogen bonds.

Hydrogen bonds are a form of dipole-dipole interactions, being the strongest form of dipole-dipole interactions.

#teamtrees #PAW (Plant And Water)

In a reaction 25.00mL of nitric acid required 51.4mL of 0.73M calcium hydroxide. Calculate the grams of nitric acid per liter of solution

Answers

Answer:

47.27 g HNO₃

Explanation:

The reaction between nitric acid (HNO₃) and calcium hydroxide (Ca(OH)₂) is the following:

2HNO₃(aq) + Ca(OH)₂(aq) → Ca(NO₃)₂ + 2H₂O(l)

According to the chemical equation, 2 moles of HNO₃ reacts with 1 mol of Ca(OH)₂. At the point of total neutralization, the total number of moles of  HNO₃ reacts with the total number of moles of Ca(OH)₂:

2 x moles HNO₃ = moles Ca(OH)₂

The number of moles is equal to the product of molarity of the solution (M) and the volume in liters (V):

M(HNO₃) = ?

M(Ca(OH)₂) = 0.73 M

V(HNO₃) = 25.00 mL x 1 L/1000 mL = 0.025 L

V(Ca(OH)₂) = 51.4 mL x 1 L/1000 mL = 0.0514 L

So, we can write the equation at neutralization point as:

2 x (M(HNO₃) x V(HNO₃)) = M(Ca(OH)₂) x V(Ca(OH)₂)

From this, we can calculate the molarity of HNO₃:

M(HNO₃) = (M(Ca(OH)₂) x V(Ca(OH)₂))/2 x V(HNO₃)

               = (0.73 M x 0.0514 L)/(2 x 0.025 L)

               = 0.75 M HNO₃

We can convert the molarity from M (mol/L) to g/L by using the molecular weight of HNO₃:

Mw(HNO₃) = 1 g/mol H + 14 g/mol N + (3 x 16 g/mol O) = 63 g/mol

Finally, we multiply the molarity by the molecular weight to obtain the grams of nitric acid per liter of solution:

0.75 mol/L HNO₃ x 63 g/mol = 47.27 g HNO₃

HELP DUE IN 7 minutes TwT
Which product forms from the synthesis reaction between sodium (Na) and
sulfur (S)?
O A. Nasz
B. Nas
C. Na2S
O D. Na2S2

Answers

Answer:

Answer is C

Explanation:

the valency of sulphur is 2 ans sodium is 1

by crossing it forms NA2S

Excessive use of chemical fertilizer cause chemical pollution.How?

Answers

Explanation:

Chemical fertilizers raise crop yields, but their heavy usage has hardened the soil, diminished fertility, reinforced pesticides, contaminated air and water, and emitted greenhouse gases, posing health and environmental risks.

How are cations formed? A. when one or more electrons of an atom disintegrate B. when an atom gains one or more electrons from other atoms C. when an atom shares one or more electrons with another atom D. when an atom loses one or more electrons

Answers

Answer:

D

Explanation:

When an atom loses an electron the number of electrons exceeds the number of protons. This means that the negative charge induced by the electrons exceeds the positive charge induced by the protons.

Identify the gas from it calculated molar mass. P = 103.2 kPa V = 225 mL T = 25.00 *C m= 0.375 g N2 Ar CO2 Kr O2 H2 Og Xe H2O He Ne

Answers

Answer:

Not sure yet but I will get back

Explanation:

how many grams of sulphur contain 3.0×1021 atoms​

Answers

Answer:

There are 0.16 g of sulphur in 3.0 × 10²¹ atoms.

Explanation:

One mole of a substance contains 6.02 × 10²³ particles

One mole of sulphur atom contains 6.02 × 10²³ atoms

Number of moles of sulphur present in 3.0 × 10²¹ atoms = 3.0 ×10²¹/6.02 10²³

Number of moles of sulphur atom = 0.00498 moles of sulphur atom

The mole of a substance is related to its mass by a quantity known as molar mass which is defined as the mass of one mole of that substance.

Molar mass of sulphur atom = 32 grams per mole (g/mol)

Mass of 0.00498 moles of sulphur atom = 0.00498 moles × 32 g/mol

Mass of sulphur = 0.16 g

Therefore, there are 0.16 g of sulphur in 3.0 × 10²¹ atoms.

Which series reveals the source of energy for coal?

coal chemicals sun
coal plants chemicals
coal animals sun
coal plants sun

Answers

Answer:

coal chemicals sun

Explanation:

help help help help help​

Answers

Answer:

Temporary hardness is a type of water hardness caused by the presence of dissolved bicarbonate minerals (calcium bicarbonate and magnesium bicarbonate). ... However, unlike the permanent hardness caused by sulfate and chloride compounds, this "temporary" hardness can be reduced by boiling the water.

There are 5 moles of N20 at STP. What is the density?

Answers

Answer:

5 mole of N2O : 112 litre of N2O

5 mole of N2O : 220 g of N2O

Then,

Density = mass/ volume

= 220/112

= 1.96 g per litre

What would happen to Earth's temperature if the energy absorbed from the sun (solar radiation) was less than the emitted (thermal) energy leaving the Earth?

Answers

Answer:

The Earth would become cooler until it probably attains a new equilibrium between absorbed solar energy and emitted solar energy.

Explanation:

The earth's energy balance refers to the balance between the energy absorbed from the sun (solar radiation) and the emitted (thermal) energy leaving the Earth. This balance ensures that the earth's surface temperature remains fairly constant.

When energy from the sun reaches the earth, it is absorbed and used by various features of the earth which uses it for their energy needs. Eventually, any excess radiant energy is sent back or emitted from the earth back into space such that the balance between absorbed and emitted energy is maintained.

However, if there is an imbalance whereby more energy is emitted than is absorbed, this would result in the earth losing more heat than it receives. This would result in the earth becoming more significantly colder until it probably attains a new equilibrium between absorbed solar energy and emitted solar energy.

Alia needs to order the following isotopes by atomic number. Use what you know about atomic number and
isotopes to drag and drop the tiles in order of increasing atomic number from lowest to highest.

Silver-109
Cadmium-106
Rhodium-122
Indium-110
Palladium-109

Answers

Answer:

Rhodium-122 < Palladium-109 < Silver-109  <  Cadmium-106 < Indium-110

Explanation:

Atomic number - Number of protons.

The number displayed at the end of the element in this question represents the mass number (Number of protons + Number of neutrons).

The atomic number of the isotopes are given below;

Silver-109  --> 47

Cadmium-106  --> 48

Rhodium-122   --> 45

Indium-110   --> 49

Palladium-109  --> 46

Arranging in order of increasing atomic number from lowest to highest;

Rhodium-122 < Palladium-109 < Silver-109  <  Cadmium-106 < Indium-110

How many moles are present in 29.4g of Aluminum (AI)? *

Answers

Answer:

588 mole

29.4

+29.4

5 8. 8g

The pressure in a tire is 101 kPa at 10.0°C, what will be the pressure of a tire at 45.0°C?

Answers

Answer:

P₂ = 113.49 kPa

Explanation:

Given that,

Initial pressure, P₁ = 101 kPa

Initial temperature, T₁ = 10.0°C = 283 K

Final temperature, T₂ = 45°C = 318 K

The relation between pressure and temperature is given by :

[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]

Where

P₂ is the new pressure

So,

[tex]P_2=\dfrac{P_1T_2}{T_1}\\\\P_2=\dfrac{101 \times 318}{283 }\\\\P_2=113.49\ kPa[/tex]

So, the new pressure is equal to 113.49 kPa.

What is the percent composition of oxygen in Iron(III) oxide? (Round to three sig figs)

Fe2O3 159.7g/mol
Fe =55.85 x 2 =111.7 g/mol
O = 16.00 x 3 = 48.00 g/mol


____% O

Answers

30.1%

do not ask why it just is.

PLEASE HELP ASAP!!!!!!????

Answers

Answer:

The third one!

click on the picture of the flowers until their colors correspond to the punnett square above. HELP PLZ!

Answers

Answer:

You will need to have a red flower in the top left, a pink flower in the top right and bottom left, and a white flower in the bottom right.

Explanation:

This flower appears to express color through codominance, which means that both genes express themselves. "R" is the dominant gene for red, and "r" is the recessive gene for white. When a flower has RR genotype, the phenotype will be a red flower. When a flower has an Rr genotype, the red and white genes will both be expressed and the phenotype will be pink. When a flower has an rr genotype, it lacks the red gene and will therefore be only white.

If an electron has an acceleration of 2.33 × 102 m/sec2, what is this value in units of m/min2?

Answers

Answer:

The electron has an acceleration of 838800 [tex]\frac{m}{min^{2} }[/tex]

Explanation:

An electron has an acceleration of 2.33*10² [tex]\frac{m}{sec^{2} }[/tex]

To be able to express in units [tex]\frac{m}{min^{2} }[/tex], you must carry out the conversion taking into account that 1 [tex]\frac{m}{sec^{2} }[/tex]= 3600 [tex]\frac{m}{min^{2} }[/tex]. Then you can apply the following rule of three: if 1 [tex]\frac{m}{sec^{2} }[/tex] equals 3600 [tex]\frac{m}{min^{2} }[/tex], 2.33 * 10² [tex]\frac{m}{sec^{2} }[/tex] equals how much [tex]\frac{m}{min^{2} }[/tex]?

[tex]\frac{m}{min^{2} }=\frac{2.33*10^{2} \frac{m}{sec^{2} }*3600\frac{m}{min^{2} }}{1\frac{m}{sec^{2} }}[/tex]

[tex]\frac{m}{min^{2} }=838800[/tex]

The electron has an acceleration of 838800 [tex]\frac{m}{min^{2} }[/tex]

Chemical equation=CH4 + O2 = CO2 + H2O.
i. identify the products of the chemical reaction.
ii. explain why these are the products based on trends in the periodic table (the number of
valence electrons, electronegativity, etc.).
iii. identify the types of bonds in the reactants and products.
iv. identify the number of each type of bond in the reactants and products.
v. identify the type of reaction

Answers

Answer:

1.The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction.The combustion of methane or octane is exothermic; it releases energy. CH4 + 2 O2 → CO2 + 2 H2O + energy The energies of the products are lower than the energiies of the reactants.

Explanation:

1. How many liters of a 0.50 M solution are needed to give 3.5 moles of solute?

Answers

Answer:

The volume of solution in liters required to make a 0.250 M solution from 3.52 moles of solute is 14.08 liters of solution

Explanation:

The question relates to the definition of the concentration of a solution which is the number of moles per liter (1 liter = 1 dm³) of solution

Therefore we have;

The concentration of the intended solution = 0.250 M

Therefore, the number of moles per liter of the required resolution = 0.250 moles

Therefore, the concentration of the required solution = 0.250 moles/liter

The volume in liters of the required solution that will have 3.52 moles of the solute is given as follows;

The required volume of solution = The number of moles of the solute/(The concentration of the solution)

∴ The required volume of solution = 3.52 moles/(0.250 moles/liter) = 14.08 liters

The required volume of solution to make a 0.250 M solution from 3.52 moles of solute = 14.08 liters.

Therefore the number of liters required to make a 0.250 M solution from 3.52 moles of solute = 14.08 liters.

Help me please I’ll give brainliest answer

Answers

Answer:

the answer is c I believe

What are the three possible combinations of the two types of
proteins that can be found on a person's red blood cells?

Answers

Answer:

WHITE BLOOD SELL?

Explanation:

During photosynthesis, plants change light energy into:

chemical energy
solar energy
mechanical energy
electrical energy
i will mark brainlest

Answers

Answer:

chemical energy

Explanation:

just put that

Answer:

chemical energy

Explanation:

it is the light dependent reaction

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Which of these sentences would make a good direct quote for a report about dog breeds that are good companions for small children?The Newfoundland is the gentle giant of the dog world.At birth, a Newfoundland puppy may weigh as much as a newborn human child.Newfoundland dogs are normally calm and easy to train. Which is evidence of climate-forced sea level rise?A. decreased temperature of oceansB. submerging of low islands and coastlinesC. temperature changes for surface currentsD. increased carbon dioxide in the atmosphere What is listed in Article I, Section 8? Simplify the expression: -3(8 + 6/9x - 3) TPW, a calendar year taxpayer, sold land with a $549,000 tax basis for $820,000 in February. The purchaser paid $89,000 cash at closing and gave TPW an interest-bearing note for the $731,000 remaining price. In August, TPW received a $60,550 payment from the purchaser consisting of a $36,550 principal payment and a $24,000 interest payment. Assume that TPW uses the installment sale method of accounting. a. Compute the difference between TPW's book and tax income resulting from the installment sale method. b. Is this difference favorable or unfavorable? c. Using a 21 percent tax rate, compute PTR's deferred tax asset or liability (identify which) resulting from the book/tax difference. Complete this question by entering your answers in the tabs below. Required A Required B Required C Compute the difference between TPW's book and tax income resulting from the installment sale method. (Round gross profit percentage to 2 decimal places, and intermediate calculations to the nearest whole dollar amount.) Book/tax difference 2)g(x) = 2x-1h(x) = 1 - g(x)The functions g and h are defined above. What is thevalue of h(0) ?A) - 2B)+01C)D)2. 2 times what gives you 16 super easy...............in picture..... Helppppppppppp. Pleaseeeeeeeeeeeeeeeeeeeeeeeeeeee Someone please explain how you got the answer please and thank you PLEASE HELP ITS MATH!!!!! Which revision corrects one or more spelling mistakes in this sentence? I think your going to chose the movie about the aliens. A. I think your going to chose the movie about the aliens. B. I think you're going to chose the movie about the aliens. C. I think you're going to choose the movie about the aliens. D. I think your going to choose the movie about the aliens. 10. Which equation below is equivalent to 3x + 2y = -2? a. y = -2/3x 5 b. y = 3/2x + 7 c. y = -3/2x - 1 d. y = 2/3x + 4 e. NOthing The mutual interdependence that characterizes oligopoly arises because: the products of various firms are homogeneous. the products of various firms are differentiated. a small number of firms produce a large proportion of industry output. the demand curves of firms are kinked at the prevailing price. If there are significant economies of scale in an industry, then: a firm that is large may be able to produce at a lower unit cost than can a small firm. a firm that is large will have to charge a higher price than will a small firm. entry to that industry will be easy. firms must differentiate their products to earn economic profits. Game theory can be used to demonstrate that oligopolists: rarely consider the potential reactions of rivals. experience economies of scale. that oligopolists can increase their profits through collusion. may be either homogeneous or differentiated. A desk drawer is shaped like a rectangular prism. The height of the drawer is 7 inches. The bottom of the drawer has an area of 210 square inches.What is the volume of the desk drawer? pls help Ill give you brainiest and pic for your profile QuestionNormal vQuestion 4In Hinduism, the moral law of the universe that directs the cycle of rebirth is calledkarma.Breincarnationkami.Ddharma. Swifty Company's financial information is presented below. Sales Revenue $ p?Cost of Goods Sold 536000 Sales Returns and Allowances 37000 Gross Profit p?Net Sales 868000 The missing amounts above are: Sales Revenue Gross Profit a. $905000 $332,000 b. $832,000 $332,000 c. $ 905,000 $416,000 d. $832,000 $416,000 the energy produced by the internal motion of atoms? electrical , thermal, chemical, nuclear Shakespeare opens the play with a (1) _________________, which tells the reader exactly what is going to happen in the story. The story takes place in (2) _________________, Italy. Please help me out. I will be picking the brainiest Answer!!!