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3 years ago

What is the current status of our sun?

Chemistry

1 answer:

Veseljchak [2.6K]3 years ago

3 0

Answer: The current status of the sun is weak and is going to continue to be weak for the coming years.

Explanation:

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How many grams of ethane gas (C2H6) are in 12.7-liter sample at 1.6 atmosphere and 24 degrees Celsius? Show all work used to sol

pentagon [3]

Data:
M (Molar Mass) of C2H6
C = 2*12 = 24 amu
H = 6*1 = 6 amu
---------------------
MM C2H6 = 24+6 = 30 g/mol

P (pressure) = 1.6 atm
V (volume) = 12.7 L
R = 0,082 atm .L/mol.K
n (Number of mols) → $n = \frac{m}{MM} m (mass) = ? T = 24ºC Celsius to Kelvin TK = TºC + 273 TK = 24 + 273 TK = 297 By the equation of state of the gases or equation of Clapeyron, we have:
 [tex]P*V = n*R*T$ 

Since $n = \frac{m}{MM}$ , we can perform the following substitution in the above Clapeyron equation:


$P * V = n * R * T$
$P*V = \frac{m}{MM} *R*T$
multiply cross
$m = \frac{P*V*MM}{R*T}$

Solving:
$m = \frac{P*V*MM}{R*T}$
$m = \frac{1.6*12.7*30}{0.082*297}$
$m = \frac{609.6}{24.354}$
$\boxed{\boxed{m \approx 25.03\:grams}}\end{array}}\qquad\quad\checkmark$

Answer:
25.03 grams of ethane gas

5 0

3 years ago

98 POINTS!!! Must SHOW YOUR WORK!

abruzzese [7]

D) If only 6.6 grams of water are produced, what is the percent yield?

Write out the balanced equation:

2C2H6 + 7O2 --> 4CO2 + 6H2O

Then, determine the limiting reagents:

16.8 grams of C2H6/30.06 g/mol of C2H6 = 0.46 mol

45.8 grams of O2/32 g/mol of O2 = 1.4 mol

0.46 mol of C2H6/2 = 0.23

1.4 mol of O2/7 = 0.20

- Dioxygen is the limiting reagent.

Find the theoretical molar yield of water:

There is a 7 mol of O2 to 6 mol of H2O ratio (according to the balanced equation).

We can setup a proportion;

7/6 = 0.23/x

0.196 = x

So, 0.196 mol of water will be produced.

How many grams of water will be produced in the reaction?

0.196 mol of H2O x 18 g/mol of H2O = 3.53 grams of H2O

6 0

3 years ago

Read 2 more answers

What is displacement?

mars1129 [50]

Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions. Example : Reaction of iron nails with copper sulphate solution.

8 0

3 years ago

If you start with .235 g nickel, tell me how much of the compound product will be produced.

Yuliya22 [10]

Answer:

Explanation:

There are many compounds that are produced from Nickel.

Molar mass of Ni = 58.7g

So for 0.235g Ni, there are 0.004M.

By conservation of mass, the compound produced will contain 0.04M of Ni.

8 0

3 years ago

In 1911 Ernest Rutherford did a famous experiment using fast-moving alpha particles as bullets and very thin gold foil as a targ

Roman55 [17]

1. Atoms are mostly empty space

2. Atoms have a concentration of positive matter somewhere in them

3. The concentration of this positive matter is very small

7 0

2 years ago