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TiliK225 [7]
3 years ago
7

I need more help please with all of these problems

Chemistry
1 answer:
prohojiy [21]3 years ago
3 0

Answer:

I need points

Explanation:

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How many atoms are there in 0.028 grams<br> of iron metal?<br> 12:50 ✓
labwork [276]

Answer:

30100000000000000000 atoms

Explanation:

Ar of Fe : 56

0.028/56 = 0.0005 moles of Fe

0.0005 * 6.02 * 10^23(Avagardro's law of constant)

= 3.01*10^20 atoms

3 0
3 years ago
B) Name three substances which can undergo sublimation and deposition respectively​
SpyIntel [72]

solid carbon dioxide, iodine, arsenic, and naphthalene

Explanation:

Examples of substances that undergo sublimation

Examples of solids that sublime are dry ice (solid carbon dioxide), iodine, arsenic, and naphthalene (the stuff mothballs are made of).

3 0
3 years ago
Something made of all one material
xxMikexx [17]

Answer:

element

Explanation:

an element is something made up of only one type of atom

6 0
3 years ago
How many atoms are in Sodium, Carbon, Hydrogen, Oxygen, Fluorine, Boron, Lithium, Helium, Phosphorus and Sulfur?
vlada-n [284]
Sodium. 11
Carbon. 12
Hydrogen 1
Oxygen 2
Fluuorine. 14
Boron. 5
Lithium. 6
Helium 3
Phosphorus 15
Sulfur 6
6 0
3 years ago
Therefore, the independent variable was<br> and the dependent<br> variable was
den301095 [7]

Answer:

The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

5 0
3 years ago
Read 2 more answers
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