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andre [41]
3 years ago
8

Please help 50 points A balanced chemical equation has _________ number of atoms for each element on both sides of the equation.

Chemistry
1 answer:
labwork [276]3 years ago
5 0

Answer: must have THE SAME number of atoms for each element

Explanation:  Chemical equations must be balanced -- they must have the same number of atoms of each element on both sides of the equation. As a result, the mass of the reactants must be equal to the mass of the products of the reaction.

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Name 2 separate technique in separating iodine crystal and iron filings​
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One is through sublimation, where the mixture is heated and iodine gets converted into gaseous form, leaving behind the iron fillings.

The other is to get a magnet near the mixture and all the iron fillings get attracted to it while iodine will be left over

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Calculate the net force on the object below.
Anastaziya [24]

Answer:

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2 years ago
Compare The atomic number
gayaneshka [121]

Answer:

They are different ions of the same element.

Explanation:

on Quizlet

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3 years ago
A student observes two strips of magnesium, mg ribbon that are each 3cm long. One strip of magnesium
ankoles [38]

Therefore option c , i.e. The substances in both test tubes are reactive only at high temperatures. is the only statement which is NOT supported by the student's observations.

<h3>What is the reaction between Magnesium and Hydrogen ?</h3>

Magnesium reacts with hydrochloric acid to produce hydrogen gas

Mg (s) + 2 HCl (aq) → MgCl₂ (aq) + H₂ (g)

In this reaction, the magnesium and acid are gradually used up , which can be seen in the test tube 2 .

A chemical reaction is taking place in Test tube 2 ,

Hydrogen gas is released in test tube 2 ,

Energy is released in the reaction involving hydrochloric acid and we can see in test tube 2 the reaction is going on

therefore option C i.e. The substances in both test tubes are reactive only at high temperatures. is the only statement which is NOT supported by the student's observation.

To know more about the chemical reaction between Magnesium and Hydrogen and this test.

brainly.com/question/19062002

#SPJ4

6 0
2 years ago
If a car travels 400m in 20 seconds, how fast is it going
prohojiy [21]

Answer:

Just apply the formula

speed = distance/ time

= 400/20

= 20 m/s

this is the way to do it

3 0
3 years ago
Read 2 more answers
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