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4 years ago

2 Points

Chemistry

2 answers:

777dan777 [17]4 years ago

6 0

Answer:

CH₄ $_{(g)}$ + 2O₂ $_{(g)}$ → CO₂ $_{(g)}$ + 2H₂O $_{(g)}$

Explanation:

This kind of reaction in which a hydrocarbon combines with oxygen gas is a combustion reaction. They are mostly used to produce heat energy that can be transformed into other forms of energy.

Every chemical reaction is made up of reactants and products. The combining species on the left hand side are the reactant and the products are the result of the combination.

Note: in writing chemical equations, the state of matter must always be included.

Reactants : Methane gas CH₄

Oxygen gas O₂

Product: Carbon dioxide CO₂

Water vapor H₂O

CH₄ $_{(g)}$ + 2O₂ $_{(g)}$ → CO₂ $_{(g)}$ + 2H₂O $_{(g)}$

marishachu [46]4 years ago

6 0

Answer:O C. CH4 (g) + 2O2 (g) – có (g) + 2H20 (g)

Explanation:

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The solubility of CO2 in water is 0.161 g/100 mL at 20oC and a partial pressure of CO2 of 760 mmHg. What partial pressure of CO2

Schach [20]

Answer: The partial pressure of carbon dioxide having solubility 0.886g/100mL is 4182.4 mmHg

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

The equation given by Henry's law is:

$C_{CO_2}=K_H\times p_{CO_2}$ ......(1)

where,

$C_{CO_2$ = solubility of carbon dioxide in water = 0.161 g/100 mL

$K_H$ = Henry's constant = ?

$p_{CO_2}$ = partial pressure of carbon dioxide = 760 mmHg

Putting values in equation 1, we get:

$760mmHg=K_H\times 0.161g/100mL\\\\K_H=\frac{760mmHg}{0.161g/100mL}=4720.5g.mmHg/100mL$

Now, calculating the pressure of carbon dioxide using equation 1, we get:

$C_{CO_2$ = solubility of carbon dioxide in water = 0.886 g/100 mL

$K_H$ = Henry's constant = 4720.5 g.mmHg/100 mL

$p_{CO_2}$ = partial pressure of carbon dioxide = ?

Putting values in equation 1, we get:

$p_{CO_2}=4720.5g.mmHg/100mL\times 0.886g/100mL=4182.4mmHg$

Hence, the partial pressure of carbon dioxide having solubility 0.886g/100mL is 4182.4 mmHg

4 0

4 years ago

A man swims for 30 minutes at a speed of 109m/min how far does he swim

allochka39001 [22]

Answer:

3270m

Explanation:

1 minute= 109m

30 minutes= 109 × 30 = 3270m

(whatever you do on one side you have to do to the other)

hope this helps :)

5 0

3 years ago

How many moles of nitrous oxide (N2O) are produced when 1.40 moles of ammonium nitrate (NH4NO3) decompes?

blagie [28]

Answer:

The answer to your question is 1.40 moles of N₂O

Explanation:

Balanced equation

NH₄NO₃ ⇒ N₂O + 2 H₂O

2 -------- N ---------- 2

4 ------- H ---------- 4

3 ------- O ---------- 3

Process

1.- From the balanced equation, we know that 1 mol of NH₄NO₃ produces 1 mol of N₂O so, we use proportions to find the number of moles produced when 1.40 moles of NH₄NO₃ react.

1 mol of NH₄NO₃ ------------- 1 mol of N₂O

1.40 moles -------------- x

x = (1.40 x 1) / 1

x = 1.40 moles of N₂O are produced

7 0

4 years ago

Assuming linear behavior and a pathlength of exactly 1 cm, what molar concentration will measure an absorbance of

MakcuM [25]

For this problem, we use the equation derived from Beer's Law as written below:

A = ∈LC,
where
A is the absorbance
∈ is the molar absorptivity
L is the path length of the cuvette
C is the concentration of the sample solution placed in the cuvette

To determine C, we have to know the rest of the parameters. Generally, the equation for C would be:

C = A/∈L = A/∈(1 cm)
C = A/∈

If you know the absorbance and the molar absorptivity in mol/L·cm, you can determine the value of C.

7 0

3 years ago

How might a collision between Neptune and Halley's Comet affect Neptune's orbit?

AveGali [126]

Answer:

It will mess up the orbit around the sun

Explanation:

5 0

3 years ago