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Korolek [52]
3 years ago
13

Which of the following most likely explains why the chemical symbol for calcium is Ca?

Chemistry
2 answers:
tresset_1 [31]3 years ago
6 0

Answer:

The symbol was assigned by modern alchemists.

Explanation:

Got it right on the test

atroni [7]3 years ago
4 0

Answer:

The element is named after the word for calcium.

Explanation: Calcium is a mineral found in many foods. The body needs calcium to maintain strong bones and to carry out many important functions. Almost all calcium is stored in bones and teeth, where it supports their structure and hardness.

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How many moles of carbon are there in a 0.70 g (3.5 carat) diamond?
maksim [4K]

Answer:

3.5 x 10^22 moles of carbon are there in a 0.70 g (3.5 carat) diamond.

Explanation:

In case of diamond, the number of atoms is the same as the number of molecules.

7 0
3 years ago
1. A gas sample at a pressure of 5.00 atm has a volume of 3.00 L. If the gas pressure is changed to 760 mm Hg, what volume will
tatyana61 [14]

Answer:

V₂ =  15.00 atm

Explanation:

Given data:

Initial pressure = 5.00 atm

Initial volume = 3.00 L

Final pressure = 760 mmHg ( 760/760 = 1 atm)

Final volume = ?

Solution:

P₁V₁ = P₂V₂

V₂ = P₁V₁ /  P₂

V₂ =  5.00 atm × 3.00 L / 1 atm

V₂ =  15.00 atm

8 0
3 years ago
On the periodic table, in which period is copper?
Firdavs [7]

Answer:

At the top of Group 11 above silver and gold.

Period 4

Explanation:

3 0
2 years ago
Given 2Na + Cl2=2NaCl, what is the excess reactant? What is the limiting reactant?
QveST [7]

Answer: The limiting reactant is Na

Explanation:

5 0
2 years ago
If a pharmacist dissolves 1.2 grams of a medicinal agent in 60 ml of a cough syrup having a specific gravity of 1.20, what is th
guapka [62]

Mass of medicinal agent taken = 1.2 g

the volume is 60 mL

Specific gravity = 1.20

So the mass of solution = specific gravity X volume = 1.20 * 60 = 72g

Now if we have increased the volume by 0.2 so the new volume = 60.2

New mass = 72 + 1.2 = 73.2  

Specific gravity = mass /  volume = 73.2 / 60.2 = 1.22 g/mL

7 0
3 years ago
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