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Naddika [18.5K]
3 years ago
11

When do you identify your variables?

Chemistry
2 answers:
Alekssandra [29.7K]3 years ago
3 0
Option numberrrr C I THINK
Natasha2012 [34]3 years ago
3 0

Answer:

Before the hypothesis

Explanation:

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Name the salt produced if sodium carbonate reacts with dilute nitric acid ? Write the equation.
Angelina_Jolie [31]

Answer:

2HNO3 +Na2CO3 → CO2 + H2O + 2NaNO3

5 0
2 years ago
Which of the following is an
eimsori [14]

Answer:

2 and 4

Explanation:

The rest of the changes are chemical. 1 has a chemical reaction happen which makes light sticks glow. 3 is because browning the meat actually causes some new compounds to form and cause caramelization.

For 2, the oxygen is simply heating up and expanding which pops the balloon. 4 is just a phase change of water vapor to liquid water.

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3 years ago
Complete the statement about the environment and its components.
borishaifa [10]

the environment is Healthy

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2 years ago
A gas is at a pressure of 4.30 atm. what is this pressure in kilopascals? in mm hg?
Monica [59]
Units to measure pressure are as follows
atm - atmospheric pressure units
kPa - kilo Pascals
mm Hg - milimeters Hg
conversion units are;
 1 atm = 101 325 Pa
therefore 4.30 atm = 101 325 Pa / atm x 4.30 atm = 435.7 Pa

1 atm = 760.0 mm Hg
 4.30 atm = 760.0 mm Hg / atm x 4.30 atm = 3268 mm Hg

answers are 435.7 Pa and 3268 mm Hg
5 0
3 years ago
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Sedimentary rocks are a formed below earths surface as magma b a type of foliated igneous rock c formed by great heat d formed f
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Its either A or C hope one of them helps
5 0
3 years ago
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