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Neko [114]
3 years ago
15

Question 3 (3 points)

Chemistry
1 answer:
prisoha [69]3 years ago
7 0
Oil or petroleum

Sugarcane and corn can be regrown, and you can’t just run out of sunlight.

Please consider marking this answer as Brainliest to help me advance.
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Acetone is a common solvent that has a density of 0.7899 g/mL. What volume of acetone, in milliliters, has a mass of 44.2 g
balu736 [363]

The volume of acetone, in milliliters, has a mass of 44.2 g is 55.96mL.

<h3>HOW TO CALCULATE VOLUME?</h3>

The volume of a substance can be calculated by dividing the mass by its density. That is;

Volume (mL) = mass (g) ÷ density (g/mL)

According to this question, acetone is a solvent with density of 0.7899g/mL and mass of 44.2g. The volume is calculated as follows:

Volume = 44.2g ÷ 0.7899g/mL

Volume = 55.96mL

Therefore, the volume of acetone, in milliliters, has a mass of 44.2g is 55.96mL.

Learn more about volume at: brainly.com/question/1578538

5 0
3 years ago
how many liters of O2 are needed to produce 5.62 g of SO2 in the following reaction? 4FeS2+11O2 -&gt;2Fe2O3+8SO2
Liula [17]

8moles of SO_2 need 11mol O_2

  • 1mol need=11/8=1.4molO_2

Moles of sO_2

\\ \rm\hookrightarrow \dfrac{5.62}{64}=0.1

So

Moles of O_2

  • 1.4(0.1)=0.14mol

We know

  • 1mol at STP=22.4L
  • 1.4mol=0.14(22.4)=3.13L O_2
5 0
3 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

\text{Moles of glucose}=\frac{\text{Mass of glucose}}{\text{Molar mass of glucose}}=\frac{97.5g}{180.15g/mole}=0.54moles

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
You need to do a research paper on global warming which of the following would be a reliable source for the information you need
Ahat [919]

C is obvious because no other choice has any closer answer


4 0
4 years ago
We love blasting our radio in the morning to wake up. Radio waves are used to transmit information on various channels. Calculat
Reil [10]

Answer:

wavelength =  0.56 × 10⁻² m

Explanation:

Given data:

Frequency of radiation = 5.4 × 10¹⁰ Hz

Wavelength = ?

Solution:

Formula:

speed of light = wavelength × frequency

wavelength = speed of light / frequency

wavelength =  3 × 10⁸ m/s / 5.4 × 10¹⁰ Hz     ( Hz= 1/s)

wavelength =  0.56 × 10⁻² m

4 0
4 years ago
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