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Olenka [21]
3 years ago
11

Hi, what are you doing?

Chemistry
1 answer:
coldgirl [10]3 years ago
6 0

Answer:

i am dancing and you ok hom

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Three samples of wood with the same volume were weighed. Sample A has a mass of 224.96 g, sample B has a mass of 0.55632 Ibs, an
sertanlavr [38]

Answer:

sample C have the highest density

Explanation:

Data Given:

mass of sample A = 224.96 g

Convert g to kg

1 g = 0.001 Kg

224.96 g = 224.96 x 0.001 = 0.225 kg

mass of sample B = 0.55632 Ibs

Convert lbs to kg

2.21 lb = 1 kg

0.55632 Ibs = 0.55632 / 2 = 0.278 kg

mass of sample C = 0.30648 kg

Solution:

To calculate density of every sample we have the following formula

            d = m/v . . . . . . . . . . (1)

It is clear from the formula that density have direct relation with mass and inverse relation with volume, that is density increase with increasing in mass.

As we have same volume of wood sample, so suppose that each sample have volume of  2 cm³

So now we find density for each sample

As for sample A

  • mass of sample A = 0.225 kg
  • supposed volume = 2 cm³

Put values in formula 1

                d = 0.225 kg / 2 cm³

                d = 0.128 kg/cm³

As for sample B

  • mass of sample A = 0.278 kg
  • supposed volume = 2 cm³

Put values in formula 1

                d = 0.278 kg / 2 cm³

                d = 0.139 kg/cm³

As for sample C

  • mass of sample C = 0.30648 kg
  • supposed volume = 2 cm³

Put values in formula 1

                d = 0.30648 kg / 2 cm³

                d = 0.153 kg/cm³

So it shows that sample C have the highest density that is 0.153 kg/cm³ . As it have the highest mass too among all samples.

5 0
3 years ago
An object is uniformly accelerated from rest to a speed of 35 meters per second in 7 seconds. The acceleration of the object is
gavmur [86]
Its 5m/s because you have to find out how many meters for one second so you divide
35/7=5 so that's your answer
3 0
3 years ago
Read 2 more answers
The volume of a gas is always the same as the volume of __________.
Len [333]
The answer would be A: its container.

Gas will expand to fill whatever container it is put in.
7 0
3 years ago
Read 2 more answers
Na + H2 → NaCl balanced equation
hodyreva [135]

Answer:

..............

........

.............

6 0
2 years ago
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Calculate the molar mass of CH4 gas at STP when 5.46Lof the gas weighs 4g??​
meriva

Answer:

About 16.42 grams

Explanation:

PV=nRT \\\\(1)(5.46L)=n(0.0821)(273) \\\\n\approx 0.2436 \\\\4g/0.2436\approx 16.42

Hope this helps!

6 0
3 years ago
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