PLEASE HELP ME, I HAVE NO IDEA HOW TO DO THIS :(

PLEASE HELP ME, I HAVE NO IDEA HOW TO DO THIS :(

Answers

Answer 1

Lol . same here. If u get any ideas please let me know

Answer 2

Answer:

See the picture you have to write like this

PLEASE HELP ME, I HAVE NO IDEA HOW TO DO THIS :(

Related Questions

Which coupling method is sensitive to temperature changes?

Answers

Answer:

Direct coupling

Explanation:

Direct coupling is sensitive to changes that occurs in temperature. It is electrical energy transfer using physical contact through a medium that is conductive.

It is useful in the interconnection of 2 circuits. This kind of coupling method can be done by a wire, a resistor or through mettalic bonding.

The particles in a gas have more space between them because

Answers

Answer:

They are more spread out.

Explanation:

The atoms and molecules in gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid.

Answer:

Explanation:

Explanation:

Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles

How are most meteoroids formed? A. As the Sun burns, it throws off small, solid particles at a regular rate which are launched into the Solar System. B. They are created in the explosions that occur when stars die and eventually reach the Solar System. C. They are small pieces that are left over from the formation of the Solar System. D. They are small pieces of debris that are the result of collisions of asteroids, comets, moons, and even planets within the Solar System. Will give brainlist

Answers

Answer:

It is no. D

Explanation:

Many meteoroids are formed from the collision of asteroids, which orbit the sun between the paths of Mars and Jupiter in a region called the asteroid belt.

From a 2.875 g sample containing only iron, sand, and salt, 0.660 g of iron and 1.161 g of sand were separated and recovered. What was the percent of salt in the original sample

Answers

Answer:

36.66%

Explanation:

Step 1: Given data

Mass of iron: 0.660 gMass of sand: 1.161 gMass of the sample: 2.875 gMass of salt: ?

Step 2: Calculate the mass of salt

The mass of the sample is equal to the sum of the masses of the components.

m(sample) = m(iron) + m(sand) + m(salt)

m(salt) = m(sample) - m(iron) - m(sand)

m(salt) = 2.875 g - 0.660 g - 1.161 g

m(salt) = 1.054 g

Step 3: Calculate the percent of salt in the sample

We will use the following expression.

%(salt) = m(salt) / m(sample) × 100%

%(salt) = 1.054 g / 2.875 g × 100% = 36.66%

The percent of salt in the original sample containing only iron, sand, and salt is 36.66%.

What is salt?

Salt is a mineral made up of primarily sodium chloride.

Seawater contains a vast amount of salt.

Given,

The total mass of the sample is 2.875 g

Mass of iron is  0.660 g

Mass of sand is 1.161 g

Step 1: To find the mass of salt

The total mass of the sample = the sum of the masses of the compounds

m(sample) = m(iron) + m(sand) + m(salt)

2.875 g =  0.660 g + 1.161 g + m(salt)

m(salt) = 2.875 g - 0.660 g - 1.161 g

m(salt) = 1.054 g

Step 2: Calculate the percent of salt in the sample

[tex]\%(salt) = \dfrac{m(salt) }{m(sample)} \times 100\%\\\\\\\%(salt) = \dfrac{1.054 g }{2.875 g} \times 100\% = 36.66\%[/tex]

Thus, the percentage of salt in the sample is 36.66%.

Learn more about salts, here:

https://brainly.com/question/16446935

In run 1, you mix 7.9 mL of the 43 g/L MO solution (MO molar mass is 327.33 g/mol), 3.13 mL of the 0.040 M SnCl2 in 2.0 M HCl solution, 5.49 mL of 2.0 M HCl solution, and 3.43 mL of 2.0M NaCl solution. What is the [H3O+]? Remember that there is a contribution of H3O+ from two solutions.

Answers

Answer:

Concentration of H3O⁺  [H3O⁺] = 0.864 M

Explanation:

Given that:

The mass concentration of MO = 43 g/L

The volume of MO = 7.9 mL = 7.9 × 10⁻³ L

Recall that

The mass number of MO = Mass concentration of MO × Volume of MO

The mass number of MO = (43 g/L) * (7.9 × 10⁻³ L)

The mass number of MO =  0.3397 g

number of  moles of MO = (mass number of MO) / (molar mass of MO)

number of  moles of MO = (0.3397 g) / (327.33 g/mol)

moles of MO = 0.00104 mol

The total volume = 7.9 mL + 3.13 mL + 5.49 mL + 3.43 mL

The total volume = 19.95 mL = 19.95 × 10⁻³ L

Concentration of MO [MO} =(number of moles of MO) / (total volume)

[MO] = 0.00104 mol  /  19.95 × 10⁻³ L

[MO] = 5.2130 × 10⁻⁸ M

the number of moles of H3O⁺ = molarity of HCl in the solution × the volume of HCl in solution

the number of moles of H3O⁺ = [(2.0 M) * (3.13 mL)] + [(2.0 M) * (5.49 mL)]

the number of moles of H3O⁺ = 17.24 mmol

Concentration of H3O⁺  [H3O⁺] = (the number of moles of H3O⁺) / (total volume)

Concentration of H3O⁺  [H3O⁺] = (17.24 mmol) / (19.95 mL)

Concentration of H3O⁺  [H3O⁺] = 0.864 M

The Concentration of H3O⁺  [H3O⁺] is 0.864 M

Calculation of the H3O⁺ concentration:

But before that following calculations should be needed.

The mass number of MO = Mass concentration of MO × Volume of MO

= (43 g/L) * (7.9 × 10⁻³ L)

=  0.3397 g

Now

number of  moles of MO = (mass number of MO) / (molar mass of MO)

= (0.3397 g) / (327.33 g/mol)

= 0.00104 mol

Now

The total volume = 7.9 mL + 3.13 mL + 5.49 mL + 3.43 mL

= 19.95 mL

= 19.95 × 10⁻³ L

Now

Concentration of MO [MO} =(number of moles of MO) / (total volume)

= 0.00104 mol  /  19.95 × 10⁻³ L

5.2130 × 10⁻⁸ M

Now

the number of moles of H3O⁺ = molarity of HCl in the solution × the volume of HCl in solution

= [(2.0 M) * (3.13 mL)] + [(2.0 M) * (5.49 mL)]

= 17.24 mmol

Now

Concentration of H3O⁺  [H3O⁺] = (the number of moles of H3O⁺) / (total volume)

= (17.24 mmol) / (19.95 mL)

= 0.864 M

Hence, The Concentration of H3O⁺  [H3O⁺] is 0.864 M

learn more about concentration here: https://brainly.com/question/17844928

Which charts or graphs always use axes both labeled with quantitative values and show individual points of data, meaning that each point matches with one value on the x-axis and one value on the y-axis? Check all that apply.

Answers

The graphs which use axes both labeled with quantitative values and show individual points of data include:

Scatter plotsLine graphsBar graphs.

What is a Graph?

Thus is defined as a pictorial representation of data or variables in an organized or definite manner.

The graphs mentioned above always have each point matching with one value on the x-axis and one value on the y-axis.

Read more about Graph here https://brainly.com/question/17531242

#SPJ1

An element is an arrangement of atoms in a particular way; True or False?

Answers

Answer:

i think it's true because An element is a substance that is made entirely from one type of atom

what is Corona virus And explain breifly in​

Answers

Answer:

it is a viral disease . it is infected by one person to other .

Why do fireworks produce different colors

Answers

every chemical element releases a different amount of energy, and that energy is what determines the color

Two or more than two atoms with different physical or chemical properties can not combine together to form an element.  Energy is the only factor that  determines the color of light of fireworks.

What is element?

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

Fireworks has many different types of element. When any element is given an energy. Then the process of excitation of electrons takes place from its outermost shells. Every element absorb characteristic wavelength of energy and releases light to the corresponding wavelength.

Therefore, energy is the only factor that  determines the color of light of fireworks.

To know more about element, here:

https://brainly.com/question/8460633

#SPJ2

convert 5 liters into kiloliters

Answers

Answer:0.005

Explanation:kilo means 1000 do you divide 5 by 1000 and you get.005

Answer: 0.005 kilolitres

Explanation:

5 liters = 0.005 kilolitres

Why? Because liters - kilolitres:  ÷ 1000

4. A solution contains 62.1 g of ethylene glycol dissolved in 250.0 g of H2O. Calculate the mass % of ethylene glycol

Answers

Answer:

Explanation:

% mass of Ethylene glycol =(  mass of ethylene glycol/ mass of solution )x100%

                        =  62.1 g/ (62.1  +  250 )   x 100%

                       = 24.24%

Mass percentage is a term that represents the concentration, basically mass by mass percentage. It tells about the percentage of a component in a whole component. Therefore, the mass % of ethylene glycol is  24.24%.

What is percentage by mass?

Mass percentage represents the the percentage of each element that is making a particular compound. Mass percentage does not have any unit as numerator and denominator contains the same unit.

Mathematically,

Percentage of mass = (component’s mass ÷ total mass) x 100%

% mass of Ethylene glycol =(  mass of ethylene glycol/ mass of solution)x100%

% mass of Ethylene glycol =  62.1 g/ (62.1  +  250 )   x 100

                                             = 24.24%

Therefore, the mass % of ethylene glycol is  24.24%.

To learn more about mass percentage, here:

https://brainly.com/question/27429978

#SPJ2

Which of the following is an extensive property? a. melting point b. hardness c. color d. volume e. temperature

Answers

The answer is d volume. This is because the melting point, color, temperature are all intensive properties. While hardness is neither extensive or intensive. Volume is the only one that is considered an extensive property.

I hope this helps ! <3

Answer: volume

explanation:

2. The four parts, or blocks, on the
periodic table are _d, and f.
s, P
a, b

Answers

Answer:

s, p

Explanation:

The four parts, or orbitals, on the periodic table are s, p, d, and f.

E
1
1 point
Which of the following is an elemental substance?
Select all the correct answers.
Mercury
2
Oxygen (O2)
3
Platinum
Chlorine (C12)
Carbon Dioxide (CO2)

Answers

Answer:

oxygen and Carbon dioxide

What does the 2+ mean??

Answers

I don’t see a 2+. If you’re talking about the number next to your cursor, it’s a 23.

A submarine took 9 hours to complete a journey. For the first 5 hours, it traveled at an average speed of 106km/h. For the rest of the journey, it traveled at an average speed of 125km/h. What was the total distance of the journey?

Answers

The correct answer is 1030 km

Explanation:

The distance a body such as a submarine travels depends on two main variables the time of the movement and the speed. Indeed, to calculate the distance it is possible to use the formula d = s x t. The process to calculate the distance of the submarine journey is shown below:

Distance in the first part of the journey:

It is known during the first part of the journey the submarine traveled 5 hours at a speed of 106 km/h

Distance = speed × time

D = 106 km/h × 5 h

D = 530 km

Distance in the second part of the journey:

During the remaining 4 hours (the first part took 5 hours and the total time traveled were 9 hours) the speed was 125km/h. Now, let's calculate the distance covered during this part of the journey

Distance = speed × time

D= 125 km/h × 4 h

D= 500 km

Total distance:

Finally, add both distances to know the total distance

530 km + 500 km = 1030 km

Which of the following changes lead to a decrease in entropy?
a. mixing of pure gases
b. sugar dissolving in coffee
c. melting snow
d. the sublimation (vaporization) of dry ice (solid carbon dioxide)
e. halving the volume of a gas

Answers

Answer:

halving the volume of a gas

Explanation:

Entropy refers to the degree of disorderliness of a system. The greater the volume of a gas, the greater its entropy. The entropy of a system is directly proportional to its volume.

Hence a decrease in the volume of a gas leads to a decrease in its entropy. Ultimately, if the volume of a given mass of gas is halved, its entropy decreases according.

An outside thermometer reads 57°F. What is this temperature in °C? Round your answer to the nearest whole number.

Answers

1. subtract 32 from 57 (57-32)

2. multiply 5/9 by (57-32)

3. equation: (57-32)×5/9

Answer:

14°C

Explanation:

Temperature is the degree of hotness or coldness of an object. It is measured using an instrument called THERMOMETER. There are different units of measuring temperature which are interconvertible. The units are Fahrenheit (°F), Celsius (°C), Kelvin (K) etc.

Convert a speed of 933 cm/s to units of inches per minute

Answers

Answer:

220000 in/min

Explanation:

Step 1: Write out conversions

1 in ≈ 2.54 cm

60 sec = 1 min

Step 2: Set up dimensional analysis

[tex]\frac{933cm}{s} (\frac{60s}{1min} )(\frac{1in}{2.54cm} )[/tex]

Step 3: Evaluate

220039.4 in/min

Step 4: Sig figs

There are 3 sig figs

220039.4 in/min ≈ 220000 in/min

What mass of neon gas is required to fill a 5.00-L container to
a pressure of 1.02 atm at 25 °C?

Answers

Answer:

[tex]m=4.21g[/tex]

Explanation:

Hello,

In this case, by using the ideal gas equation:

[tex]PV=nRT[/tex]

We can compute the mass of neon gas at the given conditions by firstly computing the moles and also considering the temperature in kelvins (298K):

[tex]n=\frac{PV}{RT}=\frac{1.02atm*5.00L}{0.082\frac{atm*L}{mol*K}*298K}\\ \\n=0.209mol[/tex]

Finally, by using the atomic mass of neon gas (20.18g/mol) we compute the required mass to fill the 5.00-L container:

[tex]m=0.209mol*\frac{20.18g}{1mol}\\ \\m=4.21g[/tex]

Best regards.

The mass of neon gas will be "4.21 g".

Ideal Gas Equation:

Given:

Pressure, P = 1.02 atmVolume, V = 5.00 LTemperature, T = 25°C or 298 K

By using Ideal Gas Equation,

⇒ [tex]PV = nRT[/tex]

or,

⇒    [tex]n = \frac{PV}{RT}[/tex]

By substituting the values,

         [tex]= \frac{1.02\times 5.00}{0.082\times 298}[/tex]

         [tex]= 0.209 \ mol[/tex]

hence,

The Mass will be:

= [tex]0.209\times \frac{20.18}{1}[/tex]

= [tex]4.21 \ g[/tex]

Thus the above answer is right.

Find out more information about ideal gas equation here:

https://brainly.com/question/4147359

2. How do we identify bias and avoid thinking errors when evaluating online

information?

Answers

Answer:

We can identify bias and avoid thinking errors when evaluating online information when there is a certain degree of partiality in the way the information is given. The writer takes one side and doesn’t consider benefits of the other side/view.

We can identify bias and avoid thinking errors when evaluating online information by making our personal findings and research from other sources and then comparing the two.

Which statement explains why carbon-14 dating cannot be used to date ancient rocks?
Carbon-14 decays at a varying rate.
Carbon-14 decays relatively quickly.
Carbon-14 can be used only to date the remains of organisms.
Carbon-14 has a half-life that is much longer than potassium.

Answers

Answer:

its, b

Explanation:

took the test on e2020

Carbon-14 dating cannot be used to date ancient rocks because:

B. Carbon-14 decays relatively quickly.

Carbon-14 dating:

It is a method for tracking down the time of natural materials, like wood, in light of their substance of radioactive carbon. Also, it is a technique for estimating the time of natural matter by investigating its carbon content.

The decay takes place around 55,000 years i.e half the amount of the radioisotope present at any given time.

Thus, option B is correct.

Find more information about Radioactive decay here:

brainly.com/question/1236735

Paul determines that the hydrogen ion concentration of his unknown solution is 3.60×10^-5 M. what is the pH of this solution?​

Answers

Answer:

pH = 4.44

Explanation:

The pH of a substance can be found by using the formula

[tex]p H = - log[ H^{ + } ][/tex]

where [ H+ ] is the hydrogen ion concentration of the solution

From the question

[ H + ] = 3.60 × 10^-5 M

So the pH is

[tex]pH = - log(3.60 \times {10}^{ - 5} ) \\ =4.44369749923[/tex]

We have the final answer as

pH = 4.44

Hope this helps you

Use the drop-down menus to identify the career that matches each description Helos employees and management negotiate: Oversees payment of employees Maintains employee records, such as contact information: Oversees the Human Resources department of a company.

Answers

Answer:

✔ Labor Relations Specialist

✔ Compensation and Benefits Manager

✔ Human Resources Assistant

✔ Human Resources Manager

B

D

A

C

Answer:

Helps employees and management negotiate:

✔ Labor Relations Specialist or B.)

Oversees payment of employees:

✔ Compensation and Benefits Manager or D.)

Maintains employee records, such as contact information:

✔ Human Resources Assistant or A.)

Oversees the Human Resources department of a company:

✔ Human Resources Manager or C.)

What is the best reason for the scientific community to accept a theory?

Answers

Answer:it’s a

Explanation:

I need help on this!!!!!

Answers

When it is not in molecular form, it is an element

Observations made during an experiment are called

Answers

Observation consists of receiving knowledge of the outside world through our senses,or recording information using scientific tools and instruments.Any data recorded during an experiment can be called and observation.

2. Condensation appears on a water glass, did this water just appear? Explain.

Answers

Answer:

When water vapor in the air comes into contact with something cool, such as the outside of a cold glass of water, its molecules slow down and get closer together. When that happens, the gaseous water vapor turns back into liquid water droplets. That's condensation.

I am timed please help

Answers

Answer:

the substance is element.

because an element is pure substance which is made of only one kind of atom.

How many atoms are represented by one formula unit of aluminum carbonate A12(CO2)3

Answers

Answer:

well ,if I have done my sum rights there are

14 atom in the one formula unit of aluminium carbonate.

Answer:

14 atoms

Explanation:

Other Questions
HELP PLEASE THIS IS DUE RIGHT NOW. What is the difference between constant acceleration and instantaneous acceleration? Which of the following is a unique feature of Object-oriented programming?O They have syntax.O They are web-based.O They use objects that contain data and functions.O They are interpreted by compilers into binary machine language. PLEASE ANSWER QUICK I HAVE NO IDEA WHAT TO WRITE!! Write a suspenseful narrative, creating suspense from an unlikely source, such as a familiar place or everyday situation. can someone please help me During the age of exploration, many Europeans desired jewels, textiles, and spices from______.A The cape a good homeB New OrleansC QuebecD Asia are intersecting lines always coplanar if you dig a 6 foot hole, how deep is that hole? There are 868 males students and1,187 female students at FerrisHigh School. How may more femalestudents are there than malestudents? Show your work. 12Select the correct text in the passage.In this excerpt from Washington Irvings Rip Van Winkle, which three parts reveal the setting?As he was about to descend, he heard a voice from a distance, hallooing, Rip Van Winkle! Rip Van Winkle! He looked round, but could see nothing but a crow winging its solitary flight across the mountain. He thought his fancy must have deceived him, and turned again to descend, when he heard the same cry ring through the still evening air: Rip Van Winkle! Rip Van Winkle!at the same time Wolf bristled up his back, and giving a low growl, skulked to his masters side, looking fearfully down into the glen. Rip now felt a vague apprehension stealing over him; he looked anxiously in the same direction, and perceived a strange figure slowly toiling up the rocks, and bending under the weight of something he carried on his back. He was surprised to see any human being in this lonely and unfrequented place; but supposing it to be some one of the neighborhood in need of his assistance, he hastened down to yield it.Reset Next x = - 4y + 37x + 3y = 29 pls help i need this grade!!!!!!!! Jenkins wants to draw a scale drawing of a tree in his yard . The scale of his model is 6in to 12ft . If his drawing is 3 in tall, how tall is the rela tree Managing risks refers to identifying any possibleprocess forand evaluating risks.events and taking steps to reduce them. Risk management is a continuousResetNext Pineapple International uses a job order costing system. Pineapple's accounting manager estimated that direct labor would be $2,990,000 (230,000 hours at $13/hour) and that factory overhead would be $1,530,000 for the current period. At the end of the period, 210,000 hours of direct labor and $1,230,000 of actual overhead costs were recorded. Determine the predetermined overhead rate using direct labor hours as a base. (Round your answer to two decimal places.) g how do I answer a question in here When writing a hypothesis in this class, an if... and... then... statement isused. What is written after the if?Controlled VariableIndependent Variable Dependent VariableConstant What are fossil fuels composed of? 1.Carbon 2.Nitrogen 3.Oxygen __________ use cleaning solutions that eventually become spent and must be disposed of properlya sump pitsb car washers c part washers d tire cleaners In XYZ, the measure of Z=90, YX = 37, ZY = 12, and XZ = 35. What ratio represents the sine of X? I need help I have this problem and I think it either has to be simplified or turned into a fraction but Im really sure its simplified anyway the equation is 5x+5x=10x please help IF YOU COULD FIND ONE THING, BESIDES MONEY, IN YOUR FAMILY ATTIC WHAT WOULD YOU WANT TO DISCOVER? WHY?