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Alona [7]
3 years ago
13

How many protons, electrons, and neutrons? ANSWEN

Chemistry
1 answer:
Step2247 [10]3 years ago
5 0

Answer:

maybe 20 butvam not sure ooo

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Read the article below. Then, answer the questions that follow.
Ulleksa [173]

Answer: no

Explanation:

8 0
3 years ago
The standard molar enthalpy of vaporization for water is 40.79kJ/mol. What mass of steam is required to release 500 kJ of energy
bezimeni [28]

Answer:

220.9g of water are required

Explanation:

The molar enthalpy of vaporization is defined as the heat released when 1 mole of water changes from liquid to gas.

For water, 1 mole releases 40.79kJ. To release 500kJ are necessaries:

500kJ * (1mol / 40.79kJ) = 12.26 moles are necessaries

To convert moles to grams we must use the molar mass (H2O = 18.02g/mol):

12.26 moles * (18.02g / 1 mol) =

<h3>220.9g of water are required</h3>
4 0
3 years ago
For the reaction N2 + 3H2 - 2NH3, how many moles of nitrogen are required to produce 9.58 mol of ammonia?
V125BC [204]

Answer:

3.193 mol

Explanation:

The reaction is

N_2+3H_2\rightarrow 2NH_3

We use the stoichiometry in order to find the moles of nitrogen required.

9.58\ \text{mol of }NH_3\times \dfrac{1\ \text{mol of }N_2}{2\ \text{mol of }NH_3}

=3.193\ \text{mol of }N_1

The amount of nitrogen required is 3.193 mol to produce 9.58 mol of ammonia.

5 0
3 years ago
__ used to show the relationship between two variables (2 words)
Naya [18.7K]
Scatter Plots. Scatter Plots show the relationship between two variables.
3 0
4 years ago
Which hypothesis of Thomson's atomic model was later found to be not true by Niels Bohr and why?
Leto [7]

Answer:

In 1911, Rutherford showed that Thomson's model was "wrong": the distribution of positive and negative particles was not uniform. Rutherford showed that the atom contains a small, massive, positively charged nucleus. He also agreed with Nagaoka that the electrons move in circular orbits outside the nucleus

7 0
3 years ago
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