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erastovalidia [21]
3 years ago
6

Find the density of Liquid A: Liquid A: Mass-138g Volume – 100 mL.

Chemistry
1 answer:
nlexa [21]3 years ago
7 0

Answer:

The answer is

<h2>1.38 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass of liquid = 138 g

volume = 100 mL

The density of the liquid is

density =  \frac{138}{100}  = \frac{69}{5 0}

We have the final answer as

<h3>1.38 g/mL</h3>

Hope this helps you

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An experiment reacts 20.4 g of zinc metal with a solution containing an excess of iron (III) sulfate. After the reaction, 10.8 g
quester [9]

Answer:

The answer to your question is 92.7%

Explanation:

Balanced Chemical reaction

                             3 Zn  + Fe₂(SO₄)₃   ⇒   2Fe   +   3ZnSO₄

Molecular weight

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Iron (III) = 56 x 2 = 112 g

Proportions  

                           196.2 g of Zinc ------------------ 112 g of Iron

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% yield = \frac{10.8}{11.65}  x 100

% yield = 0.927 x 100

% yield = 92.7

5 0
2 years ago
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Answer: Velocity

Explanation:

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3 years ago
Control of Blood pH by respiratory rate.
nata0808 [166]

Answer:

A) During this procedure ( hypoventilation ) The CO2 in the arterial blood vessels and the lungs increases and this drives the PH level in the system lower, and the equilibrium will shift to the right. this is because the Blood-PH level is controlled by CO2 - bicarbonate buffer system

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Explanation:

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CO_{2} +H_{2} O ⇄ H^+ + HCO^-_{3}

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C) Hyper ventilation before a dash would be useful because it will remove excessive Hydrogen ions and and raise the Blood PH levels in preparedness of the production of acids like Lactic acid

6 0
3 years ago
A scientist was studying a population of elephants. The first year, he counted a population of 80. Over the next eight
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Answer:

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Answer:

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