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Tems11 [23]
3 years ago
5

____ HBr + ____ Mg(OH)2 ---> ____ MgBr2 + ____ H2O

Chemistry
1 answer:
swat323 years ago
4 0
Hello Camkirkland,
I think that you are trying to balance this equation.
In order to balance a chemical equation, the numbers of atoms of each element must be equal on both sides of the equation.

In this particular equation, the answer would be (2) HBr + (1) Mg(OH)2 ---> (1) MgBr2 + (2) H2O.

Hope this answers your question!
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How does most ocean water return to the ocean in the water cycle?
abruzzese [7]

The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. ... Most precipitation falls back into the oceans or onto land, where, due to gravity, the precipitation flows over the ground as surface runoff.

7 0
3 years ago
12
VARVARA [1.3K]

Answer:

B

Explanation:

the number of protons never changes even if the atomic mass changes

5 0
2 years ago
A student finds a container of gases in the laboratory classroom with a total pressure reading of 655 mmHg. The label on the con
Elena-2011 [213]

Answer:

70.8 mmHg

Explanation:

To find partial pressure of carbon dioxide we first find the mole fraction of carbon dioxide

n (carbon dioxide) = 5/44.01 g/mol = 0.11361 mol

n (Helium) = 3.75 g/4 g/mol = 0.9375 mol

The partial pressure of carbon dioxide will be the mole fraction of carbon dioxide multiplied by the total pressure

Partial pressure = 0.11361g/(0.11361g + 0.9375 g)* 655 mmHg

                          = 70.8 mmHg

6 0
3 years ago
In the energy diagram, which number represents the potential energy of the products?
Lesechka [4]
I say Answer choice A because it is a straight line and it hasn't gone under all those reactions yet. 
6 0
3 years ago
Read 2 more answers
A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. What is the sleds potential energy
wel

Answer:

\boxed {\boxed {\sf882 \ Joules}}

Explanation:

Potential energy can be found by multiplying the mass by the height by the gravitational acceleration.

PE=mgh

The mass is 45 kilograms. The height is 2 meters. The gravitational acceleration on Earth is 9.8 meters per seconds squared.

m=45 \ kg \\h= 2 \ m \\g=9.8 \ m/s^2

Substitute the values into the formula.

PE=45 \ kg * 2 \ m * 9.8 m/s^2

Multiply.

PE=441 kg*m/s^2*2 \ m

PE= 882 \ kg *m/s^2 *m

1 kg*m/s^² is equal to 1 Newton (N). Substitute N in for kg*m/s²

PE=882 \ N*m

1 Newton meter (N*m) is equal to 1 Joule (J). Our current answer is equivalent to 882 Joules.

PE= 882 \ J

The sled's potential energy is 882 Joules.

8 0
3 years ago
Read 2 more answers
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