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oksian1 [2.3K]
3 years ago
6

Among the following scenarios, which best demonstrates resilience when confronted with stress?

Chemistry
1 answer:
Valentin [98]3 years ago
8 0
B. Everyone else aren't trying to grow, they only complain.
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Hydrogen produced from a hydrolysis reaction was collected over water and the following data was compiled.
Shkiper50 [21]

Answer:

  • 0.00358 mol

Explanation:

<u>1) Data:</u>

a) V = 93.90 ml

b) T = 28°C

c) P₁ = 744 mmHg

d) P₂ = 28.25 mmHg

d) n = ?

<u>2) Conversion of units</u>

a) V = 93.90 ml × 1.000 liter / 1,000 ml = 0.09390 liter

b) T = 28°C = 28 + 273.15 K = 301.15 K

c) P₁ = 744 mmHg × 1 atm / 760 mmHg = 0.9789 atm

d) P₂ = 28.5 mmHg × 1 atm / 760 mmHg = 0.0375 atm

<u>3) Chemical principles and formulae</u>

a) The total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas. Hence, the partical pressure of the hydrogen gas collected is equal to the total pressure less the vapor pressure of water.

b) Ideal gas equation: pV = nRT

<u>4) Solution:</u>

a) Partial pressure of hydrogen gas: 0.9789 atm - 0.0375 atm = 0.9414 atm

b) Moles of hygrogen gas:

pV = nRT ⇒ n = pV / (RT) =

n =  (0.9414 atm × 0.09390 liter) / (0.0821 atm-liter /K-mol × 301.15K) =

n = 0.00358 mol (which is rounded to 3 significant figures) ← answer

7 0
3 years ago
Read 2 more answers
An element in group 7 on the periodic table most likely has which physical property?
larisa86 [58]

Answer:

They are most likely solid

Explanation:

solid is a physical property

3 0
3 years ago
If you can solve both<br> Will mark brainly<br> ASAP
Mariulka [41]

Answer:

1. answer is subcutaneous tissue 2. answer is spleen

Explanation:

The subcutis is also known as the hypodermis or subcutaneous layer, and functions as both an insulator, conserving the body's heat, and as a shock-absorber, protecting the inner organs.

Excretory Organs. Organs of excretion include the skin, liver, large intestine, lungs, and kidneys. Together, these organs make up the excretory system.

7 0
2 years ago
Read 2 more answers
Classify the two balanced equations representing two chemical reactions
Zinaida [17]

Single Replacement & Decomposition

<h3>Further explanation</h3>

Given

Two chemical reactions

1. Cl2 + 2NaBr ⇒2NaCl + Br2

2. 2NaCl ⇒2Na + Cl2

Required

Type of reaction

Solution

Equation 1 : A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

General formula :

A + BC ⇒ AC + B

Equation 2 : the decomposition reaction of a compound into its constituent elements or compounds

General formula :

AB ⇒ A + B

4 0
3 years ago
Which describes the polarity in a water molecule?
tatyana61 [14]
Answer:

The oxygen atom in a water molecule is strongly electronegative. The atoms of the water molecule are held together by covalent bonds. water has nonpolar bonds, but it has a bent shape and is therefore polar.
6 0
3 years ago
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