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slavikrds [6]
3 years ago
12

Câu 47: Cách pha chế dung dịch từ hoá chất tinh khiết, phát biểu sai:

Chemistry
1 answer:
VashaNatasha [74]3 years ago
6 0

Answer:

a

Explanation:

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Answer:

the answer should be A

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A gas is contained in a thick-walled balloon. When the pressure changes from 45.0 bar to 96.0 bar, the volume changes from 1.20
notsponge [240]

P1 * V1 ÷ T1 = P2 * V2 ÷ T2  

45 * 1.20 ÷ 314 = 96 * V2 ÷ 420  

30,144 * V2 = 22,680  

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The new volume is approximately 0.75 liter.

I hope I helped

5 0
3 years ago
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Convert 5.28 x 1019 molecules of C6H1206 to grams.
nlexa [21]

Answer:

m=0.0158g

Explanation:

Hello there!

In this case, it is possible to comprehend these mass-particles problems by means of the concept of mole, molar mass and the Avogadro's number because one mole of any substance has 6.022x10²³ particles and have a mass equal to the molar mass.

In such a way, for C₆H₁₂O₆, whose molar mass is about 180.16 g/mol, the referred mass would be:

m=5.28x10^{19}molecules*\frac{1mol}{6.022x10^{23}molecules}*\frac{180.16g}{1mol}\\\\m=0.0158g

Best regards!

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3 years ago
Magma that is rich in feldspar and silica is called?​
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Answer:

<h3>magma that is rich in feldspar and silica is called STRATOVOLCANO.</h3>
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3 years ago
Elements
Snezhnost [94]

Answer:

elements are composed of

electrons with a little mass and negative charge

protons with mass and positive charge

neutrons with mass and no charge

isotopes same number of protons, different in neutrons

share me the other part of the photo to complete!!!

7 0
3 years ago
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