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dolphi86 [110]
4 years ago
11

The percent composition of calcium is ?

Chemistry
1 answer:
DochEvi [55]4 years ago
5 0

Answer: 40.1%

Explanation: The mass of calcium in this compound is equal to 40.1 grams because there's one atom of calcium present and calcium has an atomic mass of 40.1 . The molar mass of the compound is 100.1 grams. Using the handy equation above, we get: Mass percent = 40.1 g Ca⁄100.1 g CaCO3 × 100% = 40.1% Ca.

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Tina drew an animal cell in her science notebook. What’s wrong with the cell?
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Answer:

animal cells dont have chloroplast

Explanation:

chloroplast is used to produce chlorophyll, only something found in plant cells

7 0
3 years ago
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Fatty acid with only single covalent bonds is said to be
ohaa [14]
These are known to be saturated.  
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I hope this helps.  Please let me know if anything is unclear or if you want further explanation.
4 0
4 years ago
Which statement about ionic bonds is true?
Jobisdone [24]
The answer is b :).
3 0
3 years ago
In the
Kipish [7]

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Explanation:

5 0
2 years ago
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An irregularly shaped piece of magnesium with a mass of 11.81 g was dropped into a graduated cylinder partially filled with wate
dlinn [17]

Answer:

The answer is

<h2>1.74 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 magnesium = 11.81 g

volume = 6.80 mL

The density of the metal is

density =  \frac{11.81}{6.80}  \\  = 1.73676470...

We have the final answer as

<h3>1.74 g/mL</h3>

Hope this helps you

7 0
4 years ago
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