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3 years ago

Plss answer the question in the picture. If you actually answer I will give you brainilest!!!

Chemistry

1 answer:

DedPeter [7]3 years ago

6 0

Answer:

hey :)

your answer is D.

Explanation:

To find density, you must divide mass and volume.

8 divided by 4 is 2

6 divided by 6 is 0

4 divided by 2 is 2

hope i helped any :))

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24 grams of CH4 was added to the above reaction. Calculate the theoretical yield of CO2. A. 66 grams B. 33 grams c. 132 grams. D

Sonbull [250]

Answer:

Option A. 66 g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

CH₄ + 2O₂ —> CO₂ + 2H₂O

Next, we shall determine the mass of CH₄ that reacted and the mass of CO₂ produced from the balanced equation. This is illustrated below:

Molar mass of CH₄ = 12 + (4×1)

= 12 + 4 = 16 g/mol

Mass of CH₄ from the balanced equation = 1 × 16 = 16 g

Molar mass of CO₂ = 12 + (16×2)

= 12 + 32 = 44 g/mol

Mass of CO₂ from the balanced equation = 1 × 44 = 44 g

SUMMARY:

From the balanced equation above,

16 g of CH₄ reacted to produce 44 g of CO₂.

Finally, we shall determine the theoretical yield of CO₂. this can be obtained as follow:

From the balanced equation above,

16 g of CH₄ reacted to produce 44 g of CO₂.

Therefore, 24 g of CH₄ will react to produce = (24 × 44) /16 = 66 g of CO₂.

Thus, the theoretical yield of CO₂ 66 g

8 0

3 years ago

HELP ASAP 20 POINTS AAAA

pochemuha

Answer:

Me and my friends were going to do a science experiment. Jonny’s job was to make the HYPOTHESIS. He said the “ If we mix baking soda and vinegar together, the TEMPERATURE will go down.”

So then Molly mixed the baking soda and vinegar together and checked the TEMPERATURE. We all OBSERVED as the thermometer’s TEMPERATURE went down. “ your THEORY/ HYPOTHESIS was correct!” Exclaimed Molly.

Then the whole science GROUP let out with a cheer! And wrote the information down on their EXPERIMENTAL info chart. They took a microscope and looked at the mixture because they wanted to the the little PARTICLES in the mixture. Lily CONTROLED the microscope she zoomed in and out to see the particles.

Explanation:

i hope this helps:)

3 0

2 years ago

The ratio of sizes between the ionic radii of anions and cations in a cell has no influence on the manner of packing for that ce

Morgarella [4.7K]

Answer:

The answer is B. False

Explanation:

The ratio of sizes between the ionic radii of cations and anions in a cell influences the manner of packing for that cell thereby predicting the possible cation/anion coordination number in any compound and establishing the structure of ionic solids.

5 0

3 years ago

At stp, a 12.0 liter sample of CH4 has the same total number of molecules as

Elden [556K]

Option 2: 12.0 L of $CO_{2} (g)$ at STP.

The standard pressure and temperature values are 1 atm and 273.15 K.

Using the ideal gas equation, number of moles of gas can be calculated which is as follows:

PV=nRT...... (1)

Here, P is pressure, V is volume, n is number of moles, R is gas constant and T is temperature.

Also, in 1 mole of any gas there are $6.023\times 10^{23}$ molecules of the gas. This is known as Avogadro's number and denoted by symbol $N_{A}$

Thus,

$N=n\times N_{A}$

Equation (1) can be rewritten as follows:

$PV=\frac{N}{N_{A}}RT$

On rearranging,

$N=\frac{P\times V\times N_{A}}{R\times T}$

Here, all the other terms are constant except volume, thus, gas with volume equal to the volume of $CH_{4}$ will have same number of molecules.

Volume of $CH_{4}$ gas and $CO_{2}$ gas is same thus, $CH_{4}$ will have same total number of molecules as $CO_{2}$ gas.

5 0

3 years ago

Read 2 more answers

How much heat per mole is generated in the combustion of glucose?

Yuri [45]

<span>When 1 mol of glucose is burned, 2802.5 KJ of energy is released.

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6 0

3 years ago