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Alika [10]
3 years ago
15

URGENT - This is not really specific but I have a chemistry test really soon and I still don't understand how to balance chemica

l equations.. I've watched every video and tried practicing but I just still can't understand. Can someone help, please? 30 points will be given out + a brainliest answer will be picked
Chemistry
1 answer:
UkoKoshka [18]3 years ago
8 0

Answer:

Explanation:

- the key thing to note is that balancing is simply having equal amounts of all the compounds in an equation

1) look at how many there are in each compound i.e. cl2 has 2 and HCl has 1 hydrogen and 1 chlorine

2) balance the reactants with its products

this is done by adding a number in front of a compound

e.g. ch4 + cl2 = ccl4 + hcl

balanced: ch4 + 4cl2 = ccl4 + 4hcl

this is because there isnt equal elements of the compounds

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¿El agua salada es una mezcla homogénea o heterogénea?
mr_godi [17]

Answer:

Homogénea

Explanation:

Una mezcla homogénea ocurre cuando se unen dos o más sustancias y no se pueden identificar después de ser unidas

En este caso no se logran identificar los compuestos

7 0
3 years ago
Which of these is a characteristic of science?
Hunter-Best [27]

Answer:

C.

Explanation:

It's the only one that seems most reasonable i hope this helps

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3 years ago
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Oksi-84 [34.3K]

Answer:

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Explanation:

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4 years ago
Air pressure is measured in pascals. For a professional American football game, the ball should be inflated to about 90,000 pasc
Tatiana [17]

The variable "air pressure inside the football" in this experiment is quantitative and dependent variable. Hence, option D is correct.

<h3>What is the dependent variable?</h3>

The dependent variable is the variable that is being measured or tested in an experiment.

In the experiment, the scientist filled the footballs with fix quantity of pressure which was then kept for 12 hours. After 12 hours the pressure inside the footballs was again measured. Pressure here is a quantitative variable.

Since the air temperature is an independent variable. The pressure being the dependent variable depends upon the temperature of the air.

Independent variable; The variable which does not depends upon any other variable.

Dependent variable; The variable which depends upon the independent variable or varies with the change independent variable.

Qualitative variables are variables which cannot be expressed in form of numbers. They generally convey the characteristic, category, quality or type.

Whereas Quantitative variables are the variables which can be expressed in the form of numbers. These are the variables which exist along the continuous sequence.

Learn more about dependent variables here:

brainly.com/question/1479694

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