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2 years ago

Identify each definition that applies to the compound in red. Check all that apply.

Chemistry

1 answer:

Dvinal [7]2 years ago

4 0

Answer:it’s D Brønsted-Lowry base

Explanation:

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What is the concentration of a solution formed by mixing 89.94 grams of cobalt (II)

bezimeni [28]

Answer:

0.47 M

Explanation:

The concentration of the solution can be calculated using the following equation:

$C = \frac{\eta}{V} = \frac{m}{M*V}$

<u>Where:</u>

V: is the volume of the solution = 68.6x10⁻² L

η: is the moles of cobalt (II) sulfate

m: is the mass of cobalt (II) sulfate = 89.94 g

M: is the molar mass of cobalt (II) sulfate = 281.103 g/mol

The concentration of cobalt (II) sulfate is:

$C = \frac{m}{M*V} = \frac{89.94 g}{281.103 g/mol*68.6 \cdot 10^{-2} L} = 0.47 mol/L$

We used the molar mass of the cobalt (II) sulfate heptahydrate (281.103 g/mol) since it is one of the most common salts of cobalt.

Therefore, the concentration of a solution of cobalt (II) sulfate is 0.47 M (assuming that the cobalt (II) sulfate is heptahydrate).

I hope it helps you!

3 0

2 years ago

Read 2 more answers

A balloon filled with helium gas occupies 2.50 L at 25°C and 1.00 atm. When released, it rises to an altitude where the temperat

stira [4]

Answer:

8,19 L

Explanation:

The combined gas law is a equation that can be used <em>when the initial and final conditions -</em>pressure,volume,amount of moles,temperature-, <em>of a gas change</em> during a process. It can be written:

$\frac{P1V1}{n1T1}=\frac{P2V2}{n2T2}$

If the amount of the gas remains constant, then n1=n2 and we have:

$\frac{P1V1}{T1}=\frac{P2V2}{T2}$

For the problem we have:

<em>Note: When working with gases is important to use </em><em><u>absolute temperature values (°K, °K=°C+273,15):</u></em>

P1=1 atm, V1=2,5L, T1=25+273,15=298,15°K

P2=0,3 atm, V2=?, T2=20+273,15=293,15°K

$V2=\frac{P1V1T2}{T1P2}=\frac{1atm*2,5L*293,15K}{298,15K*0,3atm}=8,19L$

The new volume of the balloon is 8,19 L.

5 0

2 years ago

Good morning to all Indians

zimovet [89]

<h3>Good Morning have a nice day </h3>

<h2>#itz mishika here#</h2>

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2 years ago

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In the Bee movie what does normal mean in the hive?

VARVARA [1.3K]

Answer:

Acting how bees act. I had that question. :3.

6 0

3 years ago

39. Which bond is least polar?<br> A) As-C1<br> B) Bi-CI<br> C) P-CI<br> D) N-C1

garik1379 [7]

Answer:

D) N-Cl.

Explanation:

The electronegativity of the elements in Group 5 (N. P As and Bi) decreases as we go down the Group so N is the most electronegative and chlorine is less able to draw electrons away from N than from the other elements in Group 5.

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3 years ago