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shepuryov [24]
3 years ago
15

A testable explanation that's supported or refuted is called an

Chemistry
1 answer:
N76 [4]3 years ago
5 0
It is called a hypothesis.
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Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N 2 (g) 3H 2 (g) 2NH3 (g) I
balandron [24]

Answer:

We need 1.714 moles N2

Explanation:

Step 1: Data given

The reaction yield = 87.5 %

Number of moles NH3 produced = 3.00 moles

Step 2: The balanced equation

N2(g)+ 3H2(g) →2NH3(g)

Step 3: Calculate moles N2

For 2 moles NH3 produced we need 1 mol N2 and 3 moles H2

This means, if the yield was 100%, for 3.00 moles NH3 produced , we need 1.5 moles N2

For a 87.5 % yield:  

we need more N2, increased by a ratio of 100/87.5.

100/87.5 * 1.5 =  1.714 moles N2

5 0
3 years ago
Which are examples of equilibrium? Check all that apply. Water drips out of a faucet and down a drain. A person's income and exp
irga5000 [103]

The equilibrium means that amount that are coming equals the amount that are going.

So the correct answers are

2. A person's income and expenses are equal every month.

3. The pressure exerted on the inside of a balloon by the gas inside is equal to the pressure exerted on the outside of the balloon by the atmosphere.


-Hiadamcom/From Agarvated

3 0
3 years ago
Read 2 more answers
Choose the three chemical properties of a penny
lukranit [14]

The three chemical properties of a penny

Penny ( Pennies: plural; refer to a number of individual coins)

  • A chemical property of a substance is a characteristic of a particular substance that can be observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.

<h3>What is chemical property?</h3>

The chemical properties of a substance can be determined by performing experiments that use specific materials or processes with known characteristics.

The following are three chemical properties to consider when choosing an element to make coins:

  • Reactivity to water.

  • Reactivity to oxygen.

  • malleability.

It should malleable, ductile, and an extremely good conductor of both heat and electricity.

Read more about penny:

brainly.com/question/19104371

3 0
2 years ago
What is the role of an electron in an atom?
tigry1 [53]

Answer

Electrons live inside the nucleus and carry a neutral charge.

Explanation:

8 0
2 years ago
HELP ME OUT PLS!!!
alina1380 [7]
D Direction of motion I hope this helps
4 0
2 years ago
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