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2 years ago

14

A barometer is used to measure air pressure.

1 answer:

jonny [76]2 years ago

4 0

True is the correct answer.

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True or false atoms are the smallest particle of an element that have that elements properties

navik [9.2K]

Answer:false

Explanation:false

3 0

2 years ago

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Calculate the average velocity of nitogen molecule at STP<br>

JulijaS [17]

Answer:

Nitrogen molecule is 28 neuclons×1.67×10-27 kg/nucleon = 4.68 д 10-26 kg. So the average speed of a gas molecule is about 500 m/sec. This is roughly the speed of sound in a gas 340 m/sec. So the average kinetic energy of the gas molecules is related to the temperature of the gas.

I hope this is helpful

4 0

2 years ago

Anybody Understand this question please help me !

zlopas [31]

Answer:

$m_{Sn}=630.57gSn$

Explanation:

Hello!

In this case, according to the chemical reaction:

$SnO_2+2H_2\rightarrow Sn+2H_2O$

We can evidence the 2:1 mole ratio between hydrogen and tin, thus, we perform the following stoichiometric setup to obtain the mass of produced tin:

$m_{Sn}=21.46gH_2*\frac{1molH_2}{2.02gH_2}*\frac{1molSn}{2molH_2} *\frac{118.71gSn}{1molSn} \\\\m_{Sn}=630.57gSn$

Best regards!

7 0

2 years ago

Which atoms likely to react ? PLS HELPP

Irina18 [472]

Answer:

i can't, it's blocked

Explanation:

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2 years ago

Both DNA and RNA contain double strands of nucleotides.

VLD [36.1K]

Answer:

2. False

Explanation:

8 0

2 years ago

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