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andreev551 [17]
3 years ago
5

Which statement accurately describes how magnetic stripes in ocean rock provide evidence of seafloor spreading?

Chemistry
1 answer:
Naily [24]3 years ago
7 0

Answer:

The third one makes the most sense

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The recommended daily allowance (rda of calcium is 1.2 g. calcium carbonate contains 12.0% calcium by mass. how many grams of ca
defon
1) Calcium carbonate contains 40.0% calcium by weight.
M(CaCO₃)=100.1 g/mol
M(Ca)=40.1 g/mol
w(Ca)=40.1/100.1=0.400 (40.0%)!

2) Mass fraction of this is excessive data.

3) The solution is:

m(Ca)=1.2 g

m(CaCO₃)=M(CaCO₃)*m(Ca)/M(Ca)

m(CaCO₃)=100.1g/mol*1.2g/40.1g/mol=3.0 g
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3 years ago
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What is the correct orbital diagram for carbon
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This is a basic orbital diagram for carbon

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3 years ago
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2.173 moles of ethanol is presented in a 100.0g sample of ethanol .

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The amount of substance that contains as many Particles as there are atoms in exactly 12g of carbon- '12 isotope is called 1 mole '= 46 u.

7 0
3 years ago
Could some some one help with 2 4 5 7 8​
sesenic [268]

Answer:

For number 2, your answer is C.

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