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lora16 [44]
4 years ago
9

How many protons does the element cobalt (Co) have? 27 32 58.93 59

Chemistry
1 answer:
skelet666 [1.2K]4 years ago
5 0
Cobalt has 27 Protons
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A balloon is filled with air. It has a volume of 720 mL at a temperature of 22°C. You put
liubo4ka [24]

Charles's Law.

<u>V1</u><u> </u> = <u>V2</u>

T1 T2

V1 = 720 mL

T1 = 22°C

T2 = 106°C

V2 = ?

then,

<u>7</u><u>2</u><u>0</u><u> </u> = <u>V2</u><u> </u>

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2 years ago
To make a 0.500 M solution, one could take 0.500 moles of solute and add Group of answer choices enough solvent to make 1.00 kg
Fiesta28 [93]

<u>Answer:</u> The correct option is enough solvent to make 1.00 L of solution

<u>Explanation:</u>

A solution consists of solute and solvent. A solute is defined as the component present in a smaller proportion while the solvent is defined as the component that is present in a larger proportion.

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

Molarity=\frac{Moles}{Volume} .......(1)

We are given:

Molarity of solution = 0.500 M

Moles of solute = 0.500 moles

Putting values in equation 1, we get:

0.500mol/L=\frac{0.500mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.500mol}{0.500mol/L}=1.00L

Hence, the correct option is enough solvent to make 1.00 L of solution

5 0
3 years ago
Proper care of a sprain is ?
tamaranim1 [39]

Answer:

Rest. Avoid activities that cause pain, swelling or discomfort.

Ice. Use an ice pack or ice slush bath immediately for 15 to 20 minutes and repeat every two to three hours while you're awake.

Compression. To help stop swelling, compress the ankle with an elastic bandage until the swelling stops.

Elevation.

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3 years ago
(50 POINTS)THIS IS A TIMED TEST PLEASE ANSWER
aliina [53]

Answer:

the second one down is your answer

Explanation:

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3 years ago
What kind of crystalline solid is KCI?
sweet-ann [11.9K]
I don’t know if i’m right but i think iconic solid .
3 0
3 years ago
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