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____ [38]
3 years ago
11

The density of water at 400C is 0.992 g/mL What is the volume of 27.0 g of water at this temperature?

Chemistry
1 answer:
pantera1 [17]3 years ago
7 0

Answer:

Volume of water at this temperature is 27.2 mL

Explanation:

We know that density=\frac{mass}{volume}

Here density of water is 0.992 g/mL

Here mass of water is 27.0 g

So volume=\frac{mass}{density}

                         = \frac{27.0g}{0.992g/mL}

                         = 27.2 mL

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7.26 of a hydrate, Cu(NO3)2.xH2O, formed 2.4 g copper(II) oxide.
goldfiish [28.3K]

Number of moles= mass/ molar mass

Or n=m/MM

n = number of moles

m = mass

MM = molar mass

1) n CuO = 2.4g / 79.54g/mol = 0.03 mol CuO

2) n Cu(NO3)2.xH2O = 7.26 g / 205.6 = 0.035 moles of Cu(NO3)2.xH2O

3) 205.6 g

Cu = 63.5 g

N = 14g

O =16g

H= 1 g

63.5+ (14+(16*3))*2+1*2+16 =205.6 g

4) yes is 188g

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6 0
3 years ago
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Which one of the following properties is NOT a chemical property? (5 points)
telo118 [61]

Answer:

a

Explanation:

Density is a physical property.

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3 years ago
What are watts and how do they work
ipn [44]
A watt is a unit of power.
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3 years ago
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Answer from which metal these objects are made <br>*(¡¡¡) is more important ​
Gennadij [26K]

Answer:

(i) Electric Wires - Tin

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(iii) Filament of bulb - Tungsten

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5 0
2 years ago
An insulated tank contains air at 0.5 atm pressure and 298K. The outside pressure is at 1 atm pressure and 298K. A valve is open
aalyn [17]

Answer:

The temperature of the gas after it is filled is 596 K

Explanation:

According to Gay-Lussac law, the pressure of a gas mass is directly proportional to temperature to a constant volume. That means than if pressure rise, the temperature too. We can assume then the volume is constant because the tank is isolated. The tank will be full when pressure will be in equilibrium, that means when pressure will be 1 atm because it is environment pressure. Using the following equation:

P1 /T1 = P2 /T2 and replacing, T2 = P2  *T1 / P1 = 1 atm * 298K / 0.5 atm = 596 K.

I hope my answer helps you

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3 years ago
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