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STALIN [3.7K]
3 years ago
15

How many milligrams are in 2.5 kg?

Chemistry
1 answer:
ludmilkaskok [199]3 years ago
7 0

Answer:

There are 2500000 milligrams in 2.5 kg

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8 0
3 years ago
The rate of diffusion of gas A is double the rate of gas B. The ratio of their molecular weight is​
Dafna1 [17]

Answer:

Ratio is 4:1

Explanation:

from graham's law of gaseous diffusion:

{ \bf{ \frac{R _{A} }{R_{B} }  =  \sqrt{ \frac{M_{A} }{M_{B}} } }}

but Ra = 2Rb:

{ \sf{ (\frac{2}{1} ) {}^{2}   =  \frac{M _{A}}{M _{B} }   }} \\  \\ { \sf{\frac{M _{A}}{M _{B} } =  \frac{4}{1} }} \\  \\ {M _{A}} : {M _{B} } = 4 :1

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3 years ago
The instrument that is commonly used to measure the intensity of radioactivity is called a _____.
pochemuha
The instrument is a Geiger counter and is used to measure radioactive level around people's bodies.
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4 years ago
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