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aleksandr82 [10.1K]
4 years ago
7

6. A rectangular block of wood has length 6.0 cm, width 5.0 cm and height 10.0 cm. It has mass l50g. What is the mass of a block

of the same type of wood of length 3.0 cm, width 5.0 cm and height 20.0 cm?
Chemistry
1 answer:
vovikov84 [41]4 years ago
4 0
The mass would also be 150g like the first block of wood. Both of their volumes are 300 cm^2, and since they are the same type of wood they have the same density. Therefore following d=m/v, they have the same mass
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How can an organic compound exist without single bonds between the carbons?
KengaRu [80]

Answer:

Carbon atoms can form double bonds by sharing two pairs of electrons; they can also form triple bonds by sharing three pairs of electrons.

5 0
3 years ago
Determine the molecular mass ratio of two gases whose rates of effusion have a ratio of 16 : 1.
Usimov [2.4K]
Answer is: <span>the molecular mass ratio of two gases is 1 : 256.
</span>rate of effusion of gas1 : rate of effusion of gas = 16 : 1.<span>
rate of effusion of gas1 = 1/√M(gas1).
rate of effusion of gas2 = 1/√M(gas2).
rate of effusion of gas1 = rate of effusion of gas2 </span>· 16<span>.
</span>1/√M(gas1) = 1/√M(gas2) · 16 /².
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<span>M(gas1) </span>· 256 = M(gas2).<span>

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8 0
3 years ago
What is the percentage of water in the hydrate CoCl2 • 6H2O? Show your work.
Lelu [443]
Hello!

First you have to find the molar mass of the molecules

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Divide the amount of water by the total molar mass

108 / 207 = 0.5217

Convert this to a decimal

0.5217 = 52.17%

The answer is 52.17%

Hope this helps!
7 0
4 years ago
Which subatomic particle is used to identify an element and is unique to that element?
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3 0
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This is to observe carefully and in detail so as to identify causes, key factors, or possible results
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3 0
4 years ago
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