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AVprozaik [17]
2 years ago
10

I have a question can someone answer these questions for me please?

Chemistry
1 answer:
Kitty [74]2 years ago
8 0
1. C
2. E
3. A
4. B
5. D
I hope that helps <3
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What type of change forms a new<br> substance?
marusya05 [52]

Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products.

6 0
2 years ago
Which is the most reactive metal
Lena [83]

The most reactive metal on the periodic table is Francium, However, Francium is an artificial element and only minimal quantities have been produced, so for all practical purposes, the most reactive metal available is Cesium, in the alkali metal family.


ANSWER In theory, Francium, in practice the Cesium


\textbf{Spymore}​

8 0
3 years ago
12.70 L of a gas has a pressure of 0.63 atm. What is the volume of the gas at 105kPa?
Zielflug [23.3K]

Answer: 7.693 L

Explanation:

To calculate the new volume, we use the equation given by Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.

The equation given by this law is:

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

P_1=0.63atm\\V_1=12.70L\\P_2=105kPa=1.04atm(1kPa=0.009atm)\\V_2=?

Putting values in above equation, we get:

0.63\times 12.70mL=1.04\times V_2\\\\V_2=7.693L

Thus new volume of the gas is 7.693 L

6 0
3 years ago
Read 2 more answers
Help me (number 5).
olga55 [171]

Answer:

a. HF

Explanation:

6 0
2 years ago
Which kind of energy does an object have because of its height above Earth's
jonny [76]

Answer:

C po

Explanation:

baka po pero pwd din ang B pero ok ang C

3 0
2 years ago
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