Answer:
It is b to use a telescope
Answer:
B
Explanation:
Would you expect Nio to dissolve in an aqueous solution of NaNO3?
Answer:
NiO Does Not Dissolve In An Aqueous Solution Of NaNO3.
Explanation:
C. If an electron is added to the outer shell, how will this affect the charge and volume of the atom?
if an electron is added on the outer shell
Answer:
An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion.
Answer:
when an atom gains an electron, it gains a negative charge . it's volume increases as well due to the increase in repulsion between the electrons
According to the nissani what can be some possible ways to save the forest of third world countries
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, there are ways to save the forest of third world countries - this includes
1) Creating of forest reserves: Wide areas of land that are still forested can still be preserved and converted to forest reserves which can prevent these areas from being deforested as a result of human activities or industrialization.
2) Government policies: Government can put policies in place to prevent people from embarking on deforestation of certain lands. This is because some parts of the third world countries still rely on wood for cooking and other sources of daily activities.
3) Replanting of deforested areas: Replanting of trees can also help third world countries in saving the forest.
Explain the application of silver halides in darkening effect in industry
Explanation:
Silver halides are ionic crystals consisting of a regular cubic lattice of Ag and halide ions together with a small proportion of defects, such as Ag ions that have been displaced from their regular lattice position to another “interstitial” position (the Ag ions are much smaller than the halide ions), and the corresponding vacancy in the lattice.
The application of silver halides in darkening effect in industry can be seen in the production of photographic film.
What is Silver halide?This compound is usually formed when Silver reacts with an halogen under special conditions.
In photography, it is used in the production of photographic film which darkens to produce an image when exposed to light due to the effect of the compound.
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If the compound below is oxidized, the resulting product is ___. Select one: a. methane and propane b. butanal c. butanoic acid d. butane
The complete question is
If the compound below is oxidized, the resulting product is ___.
the compound given is Butanal
Select one:
a. methane and propane
b. butanal
c. butanoic acid
d. butane
Answer:
C. Butanoic Acid
Explanation:
When Butanal is oxidized using reagents like KMnO4, Tollens reagent etc.
When Aldehyde is oxidized corresponding Carboxylic Acid is produced
Butanal → Butanoic Acid
lab
table b:eyedrop of blue water in cold water
table c:eyedrop of red water in hot water
table d:see how temperature changes on white + black paper with light shining on them
plz help
brainliest for 1st correct answer
Answer:
lol, I just did this assignment, cold water
0:30: slowly expand
1:00: still expanding
1:30: expanding is continued
2:00: still expanding slowly
2:30: expanding slowly
3:00: expanded twice the size from the first time
hot water
0:30: expanding quickly
1:00: still expanding
1:30: starts to reach the surface and still expanding
2:00: almost all the of the dye reached the top
2:30: the dye reached the top and is starting to split
3:00: the dye split appart and is moving down again
radiation
white paper
0:30: at a low temp. at around 3.3 C
1:00: still at a low temp. around 4.4 C
1:30: slowly rising temp. around 5.5 C
2:00: still slowly rising temp. around 7.2 C
2:30: still at a low temp. around 8.3 C
3:00: ends at a low temp. around 10 C
black paper
0:30: at a resonable temp. at around 6.6 C
1:00: temp. rises quicker at around 13.3 C
1:30: temp. stil rising quickly at around 17.7 C
2:00: temp. is getting hotter at around 21.6 C
2:30: temp. is still getting hotter at around 26.1 C
3:00: temp. ends at a hot temp. at around 30 C
Explanation:
A student is building an electrical circuit. Which material should she choose for the wires, and why?
A. A noble gas such as krypton, because its atoms are far apart and it is nearly inert
B. A nonmetal such as carbon, because its atoms have tightly bound electrons
C. A metalloid such as germanium, because only some of its atoms have mobile electrons
D. A metal such as copper, because its atoms have very mobile electrons
Answer:
d
Explanation:
Answer:
d
Explanation:
Which of the following is NOT a
homogenous mixture?
Answer:blacks screen. No answers to choose from. Thanks for the points:))
Explanation:
how do people other than chemists use the periodic table in real life?
Answer:
The periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.
Which of the following are membranous sacs abundant in kidney and liver cells?
a. golgi bodies
b. mitochondria
c. lysosomes
d. peroxisomes
Answer: it’s B!! :)
yeha so i went to ther e htctct
Answer:
hi
Explanation:
hi
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hi
hi
hi
hi
hi
hi
hi
hi
you cool
and what is this about?
List four observations that suggest chemical change is occurring
Answer:
Examples of Chemical Changes
Burning wood.
Souring milk.
Mixing acid and base.
Digesting food.
Cooking an egg.
Heating sugar to form caramel.
Baking a cake.
Rusting of iron.
If ·X: represents the electron-dot symbol of an element, that element could be
Answer:
The answer is b
((50 BRAINLY POINTS))
Guys I really need your help on this! It's timed!
Answer:
its only 25
Explanation:
At his favorite restaurant, Dylan orders a soda with his dinner. The ice in his drink has a mass of 6 g and a volume of 20 cm3. What is the density of the ice? Explain the steps you took to solve this problem, showing your work.
An element that has an electronegativity value of zero
Answer:
Noble gases
Explanation:
Noble gases
What is the pH after two solutions are mixed: 1. A 0.155 M H2SO4 solution with a volume of 35.0 mL and 2. A 0.225 M solution of KOH with a volume of 35.0 mL. The volumes are additive.
Answer:
[tex]pH=1.67[/tex]
Explanation:
Hello.
In this case, since the reaction between the sulfuric acid and the potassium hydroxide is:
[tex]2KOH+H_2SO_4\rightarrow K_2SO_4+2H_2O[/tex]
We can see a 2:1 mole ratio between them, thus, we compute the moles of acid and base that are present in the solution by using the employed volume and its concentration:
[tex]n_{H_2SO_4}=0.155mol/L*0.0350L=0.005425molH_2SO_4\\\\n_{KOH}=0.225mol/L*0.0350L=0.007875molKOH\\[/tex]
Next, we use the 2:1 mole ratio to compute the consumed moles of acid:
[tex]n_{H_2SO_4}^{consumed}=0.007875molKOH*\frac{1molH_2SO_4}{2molKOH}=0.0039375molH_2SO_4[/tex]
It means that the leftover of sulfuric acid is:
[tex]n_{H_2SO_4}^{leftover}=0.005425-0.0039375=0.001488molH_2SO_4[/tex]
Therefore, since sulfuric acid is a strong acid, the pH is defined in terms of its concentration which is actually equal to the concentration of hydrogen ions in solution, which is computed considering the total additive volume:
[tex][H^+]=[H_2SO_4]=\frac{0.001488mol}{0.070L}=0.02125M[/tex]
So the pH turns out:
[tex]pH=-log(0.02125)\\\\pH=1.67[/tex]
Best regards.
True or false, physical properties are distinguished by the way something looks, taste, smell, and feels.
Answer:
True
Explanation:
Physical properties are based on all of our five senses, so yeah
what is the form of light
Answer:
most likely Energy that's what I'm thinking
What is 7.48 torr in atm
Answer:
0.00984211
Explanation:
Complete the sentence by using "Direct", "Inverse", or equal. The pressure and volume of a gas change in opposite directions. This can be described as an " upside-down" relationship. We can also say that the relationship between the pressure and volume of a gas is a __________________ relationship
answer:
i believe the answer is inverse.
if i'm wrong sorry :(
if i'm right your welcome :)
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.7 mole% H2O. After all the water is removed from the products, the residual gas contains 69.0 mole% CO2 and the balance O2 a. What is the mole percent of propane in the fuel?
Answer:
28%
Explanation:
Basically, all o did was write the equations, balance it and solve for them. Also, at the place I stared, I used simultaneous equation to solve it. Multiplying by 8 and also 3.
It's a pretty straightforward question.
At the final step that's missing, I Did
(y)C3H8 = 2.8 / ( 2.8 + 7.1)
(y)C3H8 = 0.28
BASED ON THE INFORMATION BELOW. CALCULATE THE MASS FOR ONE OF THESE ATOMS:
MASS OF A SINGLE CARBON ATOM:
MASS OF A SINGLE OXYGEN ATOM:
MASS OF A SINGLE HYDROGEN ATOM:
C = 12 g
O = 16 g
H = 1 g
Further explanationConservation of mass stated that
In a closed system, the masses before and after the reaction are the same
we can calculate the mass of each atom in the compound :
O in O₂ :
mass O₂ = 32
mass O = 32 : 2 = 16 g
H in H₂O
mass H₂O = 18
mass 2.H + mass O = 18
mass 2.H + 16 = 18
mass 2.H=2
mass H = 1 g
C in CH₄
mass CH₄ = 16
mass C + mass 4.H = 16
mass C + 4.1=16
mass C = 12 g
or we can use formula :
Mass of a single C :
[tex]\tt =\dfrac{Ar~C}{MW~CO_2}\times mass~CO_2\\\\=\dfrac{12}{44}\times 44=12[/tex]
Which particles are equal in number for an atom with a neutral charge?
Why do we need to identify matter?
Answer:
It's important for scientists to know the properties of matter because all things are made up of matter. Each type of matter has different physical characteristics and scientists need to know and understand these characteristics to make calculations. ... The main phases of matter are solid, liquid, and gas
Explanation:
^^
If 342.2 grams of C12H22O11 (sucrose) is dissolved in 1.0 L of solution. What is the molar concentration of the solution? Report your answer with the correct number of significant figures.
Answer:
M = 1 M
Explanation:
Given data:
Mass in gram = 342.2 g
Volume of solution = 1.0 L
Molar concentration = ?
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
Number of moles of sucrose:
Number of moles = mass/molar mass
Number of moles = 342.2 g/ 342.2 g/mol
Number of moles = 1 mol
Molarity:
M = 1 mol / 1.0 L
M = 1 mol/L
M = 1 M
The molar concentration of the solution is :
- M = 1 M
Check below to see the full solution.
Molar ConcentrationMolarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
What information do we have?
Mass in gram = 342.2 g
Volume of solution = 1.0 L
Molar concentration = ?
Number of moles of sucrose:
Number of moles = mass/molar mass
Number of moles = 342.2 g/ 342.2 g/mol
Number of moles = 1 mol
Molarity:
Molarity = number of moles of solute / L of solution
M = 1 mol / 1.0 L
M = 1 mol/L
M = 1 M
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What is the coefficient of oxygen (O_2) in the balanced equation for the reaction written below?
Answer:
1 is your coefficient of oxygen
Explanation:
hope it helps
Based on the synthesis reaction, what would the product of the reaction be? NaPO3 + CuO → ? NaO + CuPO3 Na + P + Cu + O4 NaCuPO4 NaCu + PO4
Answer:
C
Explanation:
Based on the synthesis reaction,the product of the given chemical equation is NaCuPO4 .
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
Learn more about chemical equation,here:
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