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Chemistry

1 answer:

Arte-miy333 [17]2 years ago

6 0

Answer:

<h2>answer - b molarity </h2>

Explanation:

<h2>please like me</h2><h2>I hope answer correct</h2>

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Phoenix [80]

mass of reactants = mass of products best represents the law of conservation of mass

Explanation:

This is a law of thermodynamic that applies to chemical reactions. The mass of the reactants must equal to that of the products because energy/mass cannot be destroyed or created. This is why ideally, chemical reactions should be balanced to conform to this law.

8 0

2 years ago

4. How does the water vapor change as altitude increases?

Karolina [17]

Answer:

it drifts through the atmosphere and the vapor absorbs heat then the warm air rises up therefore leaving the planet's surface and releasing the heat back into the upper part of the atmosphere

4 0

3 years ago

When heated, magnesium combines readily with excess oxygen in the air to produce magnesium oxide, as shown in the following unba

aev [14]

Answer: The given chemical reaction can be classified as synthesis and exothermic.

Explanation:

A synthesis reaction is defined as the reaction where two small chemical species combine in their elemental state to form a single large chemical species.

Exothermic reactions are defined as the reactions in which heat is released by the reaction. The heat is written on the product side of the reaction.

For the given chemical reaction:

$Mg(s)+O_2(g)\rightarrow MgO(s)+\text{heat}$

The above chemical reaction is a type of synthesis and exothermic as two substances in their elemental state are combining. Also, heat is getting released in the reaction.

Hence, the given chemical reaction can be classified as synthesis and exothermic.

4 0

2 years ago

If a measurement is recorded as 1.2 cm, what is the smallest marking on the instrument?

zhannawk [14.2K]

The smallest marking would be 1/10th of a centimeter

5 0

2 years ago

Find the relative molecular mass of hydrated iron (II) sulphate FeSO4.7H2O

Pepsi [2]

Answer:

the relative molecular mass of hydrated iron (II) sulfate FeSO4.7H2O is 278.02

Explanation:

5 0

2 years ago