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Afina-wow [57]
3 years ago
6

4 Hydrogen has three naturally occurring isotopes. H.1, H-2, and H-3 The atomie mass of Hydrogen is 1.097 Which isotope is most

abundant in nature? Explain​
Chemistry
1 answer:
WINSTONCH [101]3 years ago
8 0

Answer:

The number following the name of the element is the number of subatomic particles inside the nucleus of the atom. This means that it is the mass number of the isotope. The average atomic mass of the element is the sum of the products of the percentage abundance and mass number of the naturally occurring isotopes.

Since, the average atomic mass of the hydrogen is nearest to 1 then, the most abundant isotope should be hydrogen-1.

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Consider the generic reaction: 2 A(g) + B(g) → 2 C(g). If a flask initially contains 1.0 atm of A and 1.0 atm of B, what is the
irina1246 [14]

Answer:

b. 1.5 atm.

Explanation:

Hello!

In this case, since the undergoing chemical reaction suggests that two moles of A react with one moles of B to produce two moles of C, for the final pressure we can write:

P=P_A+P_B+P_C

Now, if we introduce the stoichiometry, and the change in the pressure x we can write:

P=1.0-2x+1.0-x+2x

Nevertheless, since the reaction goes to completion, all A is consumed and there is a leftover of B, and that consumed A is:

x=\frac{1.0atm}{2}=0.5atm

Thus, the final pressure is:

P=1.0-2(0.5)+1.0-(0.5)+2(0.5)\\\\P=1.5atm

Therefore the answer is b. 1.5 atm.

Best regards!

3 0
3 years ago
A scientist performs a cutting-edge experiment with exciting results. What
algol [13]

Answer:

B

Explanation:

It's B because the first trial of an experiment may not always be right so you want to run multiple trials

4 0
3 years ago
This app is for helping people so please help me with these 2 questions
DiKsa [7]

Answer:

1. The organism becomes ill or may die.

2. Pathogens.

Explanation:

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(2) A pathogen is a virus that can cause diseases.

4 0
3 years ago
What do isotopes of an element contain?
My name is Ann [436]

Answer:

Explanation:

An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutron s, in addition to the number of proton s that uniquely defines the element. The nuclei of most atom s contain neutrons as well as protons

5 0
3 years ago
To titrate 50.00 milliliters of an unknown HC2H3O2 sample, use 43.00 milliliters of a standard 0.1000 M NaOH titrant. What is th
rewona [7]
The molarity of the acid is 0.086 00 mol/L.

HC₂H₃O₂ + NaOH → NaC₂H₃O₂ + H₂O

Since 1 mol of acid reacts with 1 mol of base, we can use the formula

M₁V₁ = M₂V₂

M₁ = ?; V₁ = 50.00 mL
M₂ = 0.1000 mol/L; V₂ = 43.00 mL

M₁ = M₂ × \frac{ V_{2}}{ V_{1}} = 0.1000 mol/L × \frac{43.00 mL}{50.00 mL} = 0.086 00 mol/L
7 0
4 years ago
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