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Dominik [7]
2 years ago
5

Similar rock formations have been discovered in the United States and Portugal. These rock formations were formed at the same ti

me and are made of the same types of rocks. What could explain how these rocks got so far apart?
Chemistry
1 answer:
Ray Of Light [21]2 years ago
6 0

theAnswer:A

Explanation:

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If 16.4 grams of calcium nitrate is heated as shown in the reaction:
vfiekz [6]

Answer:

7.2

Explanation:

you first have to find the number of moles of nitrogen dioxide by using the number of moles for calcium nitrate and the mole to mole ratios

number of moles of calcium nitrate=mass/mm

=16.4/102

=0.16g/mol

then you use the mole to mole ratios

2 : 4

0.16: x

2x/2=0.64/2

x=0.32g/moles of nitrogen dioxide

then you use the formula for the volume

v=22.4n

=22.4×0.32

=7.2

I hope this helps

4 0
2 years ago
Which is TRUE of the products in this combustion reaction? 4Fe + 3O2 2Fe2O3
ycow [4]
The only true answer is A. 

products are on the right side of the reaction

products and reactants don't necessarily have same physical or chemical properties

It is the reactants that <span>are the atoms, molecules, or compounds that participate in the reaction.</span>
7 0
3 years ago
Read 2 more answers
If the pressure is 0.9 kPa. and the volume is 4.0L, then the pressure changes to 0.20 kPa. What is the new volume?
ch4aika [34]

Answer:

18 L

Explanation:

boyles law

P1V1 = P2V2

V2 = P1V1/P2

V2 = (.9 * 4)/.2

V2 = 18

4 0
2 years ago
What are the processes for the 3 types of weathering
sweet [91]
The processes for the 3 types of weathering are,
biological: rocks worn down by plants  
physical: water freezing and thawing in cracks of rocks 
chemical: Acid rain
Hope this helped!!
 

7 0
3 years ago
If you looked at one of your body's cell under a microscope with 100x magnification, would it be larger, smaller, or the same si
aev [14]
Peoples cells vary . so theres no definite say
7 0
3 years ago
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