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EastWind [94]
3 years ago
9

Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?

Chemistry
2 answers:
Sveta_85 [38]3 years ago
7 0
3 is the correct answer.

gregori [183]3 years ago
5 0
ANSWER(S):

p= 3 g/cm³

EXPLANATION(S):

density formula: p= m/V; p= p, m= 9 g, V= 3
p= (9)/(3)
p= 3

p= 3 g/cm³
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AleksAgata [21]

Answer:

120 g SO3

Explanation:

128 g SO2  -> 160 g SO3

 96 g SO2  -> x

x= (96 g SO2 * 160 g SO3)/128 g SO2

x= 120 g SO3

8 0
3 years ago
A student has two identical glasses of milk except that the temperature of the milk in one glass is 40ºF
kiruha [24]

80ºF.

Explanation:

At a temperature of  80ºF, the milk has the highest thermal energy.

The thermal energy in a body increases as the temperature of the body increases.

To increase the temperature of a body, heat is a supplied to it or work is done on it.

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Learn more:

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5 0
4 years ago
Glucose (C6H12O6)(C6H12O6) can be fermented to yield ethanol (CH3CH2OH)(CH3CH2OH) and carbon dioxide (CO2).
zhenek [66]

Answer: a) 49.8 gram

b) 47.0 %

Explanation:

First we have to calculate the moles of glucose

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The balanced chemical reaction will be,

C_6H_{12}O_6\rightarrow 2CH_3CH_2OH+2CO_2

From the balanced reaction, we conclude that

As,1 mole of glucose produce = 2 moles of ethanol

So, 0.54 moles of glucose will produce =  \frac{2}{1}\times 0.54=1.08 mole of ethanol

Now we have to calculate the mass of ethanol produced

\text{Mass of ethanol}=\text{Moles of ethanol}\times \text{Molar mass of ethanol}

\text{Mass of ethanol}=(1.08mole)\times (46.08g/mole)=49.8g

Now we have to calculate the percent yield of ethanol

\%\text{ yield of ethanol}=\frac{\text{Actual yield}}{\text{Theoretical yield }}\times 100=\frac{23.4g}{49.8g}\times 100=47.0\%

Therefore, the percent yield is 47.0 %

7 0
3 years ago
When does the dipole arrow point to Atom A? (Use electronegativity in your explanation)
Marrrta [24]

Answer:

Dipole, less electronegativity,  higher electronegativity

8 0
3 years ago
HEELP PLEASE Any change that alters a substance without changing it into another substance is a(n)________change.
Trava [24]
Sounds like a physical change.
8 0
3 years ago
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