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Chemistry

1 answer:

Afina-wow [57]2 years ago

6 0

1. A star
2. A solar system
3. A galaxy
4. A nebula
5. A light year

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I will go to the app and give you brainly Est if u answer correctly ASAPPPPP

zhuklara [117]

Answer:

Explanation:

I think it is C

4 0

2 years ago

The partial pressure of CO2 inside a bottle of soft drink is 4.0 atm at 25°C. The solubility of CO2 is 0.12 mol/L. When the bott

navik [9.2K]

We can solve this problem by using Henry's law.
Henry's law states that the amount of dissolved gas is proportional to its partial pressure.
$C=kP$
C is the solubility of a gas.
k is Henry's law constant.
P is the partial pressure of the gas.
We can calculate the constant from the first piece of information and then use Henry's law to calculate solubility in open drink.
0.12=4k
k=0.03
Now we can calculate the solubility in open drink.
$C_o=kP_o
$
$C_o=0.03 \cdot 3\cdot 10^{-4}=0.09\cdot 10^{-4} \frac{mol}{L}$
Now we need to convert it to g/L. One mol of CO2 is 44.01g.
The final answer is:
$C_o=0.09\cdot 10^{-4}\cdot 44,01=3.4\cdot 10^{-4} \frac{g}{L}$

4 0

2 years ago

What substance do you place in the burette during a titration

strojnjashka [21]

Answer:

Acid solution

Explanation:

In acid-base titrations carried out in school and college labs, many of the older generation, well-informed teachers told their students that the acid solution should be taken in the burette.

5 0

2 years ago

The revival of jansenism, which centered on miracles that allegedly happened at the grave of a jansenist priest, is evidence of

lapo4ka [179]

The evidence of the revival of Jansenism is the desire of ordinary people to connect themselves to what they saw as the direct work of God.

<h3>What is Jansenism?</h3>

Jansenism is a theological movement that is done with the mixing of Catholicism. It was active in France's kingdom.

Primarily throughout the seventeenth and eighteenth centuries, Jansenism flourished inside Roman Catholicism before being denounced as heresy in 1653 by Pope Innocent X.

Thus, the yearning of common people to participate in what they perceived as God's direct action is proof of the rebirth of Jansenism.

To learn more about Jansenism, refer to the link:

brainly.com/question/14563019

#SPJ4

3 0

1 year ago

Balance the equation for the reaction of benzene and hydrogen to form cyclohexane.. C6H6 + H2 → C6H12.

Vedmedyk [2.9K]

Here is a universal law to balance chemical equations :
All chemical equations must be balanced because of the law of conservation of mass.
It states that "matter cannot be created or destroyed."
So, the number of atoms that you start with at the beginning of the reaction must equal the number of atoms that you end up with.
keeping this law in our mind,lets balance the equation for the reaction of benzene and hydrogen to form cyclohexane.
C 6 H 6 + H 2 → C 6 H 12.
Here is the balance chemical equation.
2 C 6 H 6 + 6 H 2 → 2 C 6 H 12.

3 0

3 years ago