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Mekhanik [1.2K]
3 years ago
11

What is the mass of 4.57 x 1021 molecules of ammonia (NH3)?

Chemistry
1 answer:
Alex17521 [72]3 years ago
5 0

Answer:

4665.97

Explanation:

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The recommended daily sugar intake is 50.0 gram. How many moles of sugar (C12H22O11) are in 50.0 grams of sugar?
Kitty [74]

Answer:

0.14607220033346532

Explanation:

3 0
2 years ago
What are household items that are made up from carbon?
sweet-ann [11.9K]
you’re made partly of carbon so is clothes, furniture, plastics, yr household machines
4 0
2 years ago
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Which part of an investigation is only found in an experimental investigation?
pantera1 [17]

Answer:

The correct answer is control group.

Explanation:

A group used in a study or in an experiment, which does not get treatment by the scientists and is used as a foundation to determine the functions of the other tested subjects is known as the control group. The control group is only found in an experimental investigation.  

The group in an experiment, which gets the variable being examined is known as an experimental group. The comparison of an experimental group is done with a control group in order to find the answers in an experiment.  

3 0
2 years ago
Which set contains non-equivalent members?A) enthalpy and heat contentB) endothermic reaction and +HC) exothermic reaction and -
max2010maxim [7]

Answer:

E

Explanation:

Here in this question, what we will do is to select which of the pairs that do not correlate.

A. Enthalpy and heat content

This two terms are at par with each other. By definition, the enthalpy of a system simply is the total amount of heat content it has.

B. Endothermic reaction and +H

These two terms are at par with each other. An endothermic reaction is one in which heat is absorbed from the surroundings. It has a positive value for the heat content i.e the enthalpy is positive and thus H is positive.

C. Exothermic reaction and -H

An exothermic reaction is one in which heat is released to the environment. It usually has a negative value for the enthalpy and thus the value of H is negative.

D. High energy and High Stability

These two terms are not at par. When an entity has or is of high energy, it is usually unstable. An entity at a higher energy level will not be stable until it goes to a lower level of energy.

Thus higher energy level is associated with lesser stability while lower energy levels are associated with higher stability. The lesser the energy of an entity, the higher its stability.

This makes the option our answer.

8 0
3 years ago
13. Which statement about trace elements in our atmosphere is false?
tatiyna

Answer: sorry I’m not sure

Odjri:

6 0
3 years ago
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