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Scorpion4ik [409]
3 years ago
13

c)A 100mL graduated cylinder contained 25.6mL of water. A test tube full of water was emptied into the graduated cylinder. The w

ater volume in the graduated cylinder was then found to be 45.8mL. What was the volume of water in the test tube?
Chemistry
2 answers:
mart [117]3 years ago
8 0

Answer:

20.2 mL

Explanation:

45.8 - 25.6 as 45.8 was the mass with the water from the test tube added

belka [17]3 years ago
5 0

Answer : The volume of water in the test tube is 20.2 mL

Explanation : Given,

Volume of water in graduated cylinder = 25.6 mL

Volume of graduated cylinder = 100 mL

Volume of water after adding full test tube of water = 45.8 mL

Now we have to calculate the volume of water in the test tube.

Volume of water in the test tube = Volume of water after adding full test tube of water - Volume of water in graduated cylinder

Volume of water in the test tube = 45.8 mL - 25.6 mL

Volume of water in the test tube = 20.2 mL

Therefore, the volume of water in the test tube is 20.2 mL

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5 0
2 years ago
The heat of combustion of ethane is -337.0kcal at 25 degrees celsius. what is the heat of the reaction when 3g of ethane is burn
Ghella [55]

Answer:

Q = -33.6kcal .

Explanation:

Hello there!

In this case, according to the equation for the calculation of the total heat of reaction when a fixed mass of a fuel like ethane is burnt, we can write:

Q=n*\Delta _cH

Whereas n stands for the moles and the other term for the enthalpy of combustion. Thus, for the required total heat of reaction, we first compute the moles of ethane in 3 g as shown below:

n=3g*\frac{1mol}{30.08g}=0.1mol

Next, we understand that -337.0kcal is the heat released by the combustion of 1 mole of ethane, therefore, to compute Q, we proceed as follows:

Q=0.1mol*-337.0\frac{kcal}{mol}\\\\Q=-33.6kcal

Best regards!

8 0
3 years ago
Determine the Density of a mass = 2000g and volume = 80ml
sergey [27]

Answer:

Explanation:

D = m/v

D = 2000/80 = 25

5 0
3 years ago
How many moles of carbon dioxide can be formed by the decomposition of 5.0 moles of aluminium carbonate
Ksenya-84 [330]

Answer:

30 moles of CO₂

Explanation:

3 0
2 years ago
What is the mass, in grams, of a liquid having a density of 1.50g/mL and a volume of 3500mL
mojhsa [17]

Answer:

5,250g

Explanation:

Density = Mass / Volume

*Note: mass = x

1.50g/mL = x / 3500mL

multiply 3500mL on both sides

1.50g/mL * 3500mL = 3500mL(x) / 3500mL

cancel units

x = 5250g

5 0
3 years ago
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