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katrin [286]
3 years ago
8

The density of an object is calculated as Density = . If 100mL of water weighs 100g calculate the density?

Chemistry
1 answer:
iren2701 [21]3 years ago
3 0
D = mass / volume

d = 100 g / 100 mL

d = 1.0 g/mL
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Which species is the reducing agent in a redox reaction? Chem is hard​
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Explanation:

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What is the mass in grams of<br>1.0mole of (NH4)2S?​
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Rank the following compounds in order of decreasing boiling point: potassium fluoride (KF), acetylene (C2H2), and formaldehyde (
otez555 [7]

Answer: KF > CH_2O > C_2H_2

Explanation:

The order of boiling point depends upon the type of interactions present between the molecules.

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C_2H_2 is a covalent compound and the molecules are held together by weak van der Waals' forces.

Formaldehyde is a polar compound due to presence of polar carbonyl group. Hence dipole-dipole force is present between formaldehyde molecules.

Thus the decreasing order of boiling point is:

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8 0
2 years ago
How many moles of hydrogen gas can be produced if 0.78 moles of hydrochloric acid reacts with excess solid zinc according to the
White raven [17]

Answer:

The answer to your question is It will be formed 0.39 moles of H₂

Explanation:

Data

moles of H₂ = ?

moles of HCl = 0.78

moles of Zinc = excess

Balanced chemical reaction

              2 HCl  +  Zn  ⇒  1 H₂  +  ZnCl₂

Process

1.- Use proportions to solve this problem. Consider the coefficients of the balanced reaction.

               2 moles of HCl ---------------------- 1 mol of H₂

               0.78 moles of HCl -----------------  x

               x = (0.78 x 1) / 2

- Simplification

              x = 0.78 / 2

- Result

              x = 0.39 moles of H₂

3 0
3 years ago
Which describes the amplitude of a wave when it carries more energy?
MrMuchimi

Answer:

It is higher.

Explanation:

The amplitude of a wave that carries more energy is usually higher.

The energy carried by a wave is related to the amplitude in such a manner that it is proportional to the square amplitude.

Amplitude is the maximum vertical displacement of a wave moving along its path.

  • Energy of wave and its amplitude are directly proportional to one another.
  • If the energy of wave is doubled, the amplitude is quadrupled.
  • So, the higher the energy of a wave, the more its amplitude.

7 0
2 years ago
Read 2 more answers
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