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ryzh [129]
4 years ago
9

An object has a mass of 57.6g . find the object's density, given that's it's volume is 40.25cm^3​

Chemistry
2 answers:
nordsb [41]4 years ago
6 0
Given: mass = 57.6 g, volume = 40.25 cm3
Unknown: density
Density = mass/volume
density = 57.6 g/40.25 cm3
density =1.43 g/ cm3
dsp734 years ago
3 0

Answer:

<h3>The answer is 1.43 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 57.6 g

volume = 40.25 cm³

We have

density =  \frac{57.6}{40.25}  \\  = 1.431055900...

We have the final answer as

<h3>1.43 g/mL</h3>

Hope this helps you

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the reaction of 50 mL of gas with 50 mL of gas via the equation: Cl2(g) + C2H4(g) ➔ C2H4Cl2 (g) will produce a total of ________
spin [16.1K]

Explanation:

The given data is as follows.

      50 ml of Cl_{2},       50 ml of C_{2}H_{4}

And, it is known that at STP 1 mole of a gas occupies 22.4 L. Hence, moles present in 50 ml of gas are as follows.

          \frac{50}{22.4 \times 1000}      (As 1 L = 1000 ml)

          = 2.23 \times 10^{-3} moles

So, according to the given equation 2.23 \times 10^{-3} moles of Cl_{2} reacts with 2.23 \times 10^{-3} moles of C_{2}H_{4}.

Hence, moles of C_{2}H_{4}Cl_{2} is equal to the moles of C_{2}H_{4} and Cl_{2}.

Therefore, moles of C_{2}H_{4}Cl_{2} = 2.23 \times 10^{-3} moles

           1 mole of C_{2}H_{4}Cl_{2} = 22.4 L

   2.23 \times 10^{-3} moles = 22.4 \times 2.23 \times 10^{-3} moles        

                                = 50 ml of product

Thus, we can conclude that 50 ml of products if pressure and temperature are kept constant.

5 0
4 years ago
What volume of hydrogen will be produced at STP by the reaction of 78.33 g of aluminum with excess water
nydimaria [60]
The balanced equation for the above reaction is 
2Al + 6H₂O ---> 2Al(OH)₃ + 3H₂
stoichiometry of Al to H₂ is 2:3
number of Al moles reacted - 78.33 g / 27 g/mol = 2.901 mol
according to molar ratio 
2 mol of Al forms - 3 mol of H₂
therefore 2.901 mol of Al - forms 3/2 x 2.901 = 4.352 mol

molar volume states that 1 mol of any gas occupies a volume of 22.4 L at STP
if 1 mol occupies 22.4 L
then 4.352 mol occupies - 22.4 L/mol x 4.352 mol = 97.48 L
volume occupied by H₂ is 97.48 L
4 0
3 years ago
Nah I'm gonna fail this quiz help please ​
Eva8 [605]

Answer:

It has 2 eyes

Explanation:

Quantitive observation means that it is facts based of numbers, therefore you can count how many eyes it has, but not that it has red eyes

4 0
3 years ago
A chemist carefully measures the amount of heat needed to raise the temperature of a 894.0g sample of a pure substance from to −
astraxan [27]

Answer:

C = 0.2349 J/ (g °C)

Explanation:

Mass, m = 894.0g

Initial Temperature = −5.8°C

Final Temperature =  17.5°C

Temperature change = 17.5°C - (−5.8°C) = 23.3

Heat, H = 4.90kJ = 4900 J

Specific heat capacit, C = ?

The relationship between these quantities is given by the equation;

H = mCΔT

C = H / mΔT

C = 4900 / (894)(23.3)

C = 0.2349 J/ (g °C)

4 0
3 years ago
How far will 500 j raise a 20 kg mass
alexandr402 [8]

Answer:

2,000

Explanation:

3 0
3 years ago
Read 2 more answers
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