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2 years ago

7

Plz answer!!! Due in 10 minutes!!! Will give BRAINLIEST and extra points to first correct answer!!!

2 answers:

Ugo [173]2 years ago

8 0

Answer:

B

Explanation:

u do the math and you will get the answer

Stella [2.4K]2 years ago

6 0

Answer:

D.

because it would be impossible to get a precise measurement if the mass of the product without the equipment.

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Periodic Table: Why are group 1A elements called alkali metals?

FrozenT [24]

Answer:

Explanation:

The elements in Group I of the periodic table are called alkali metals. They are called alkali metals because they react with water to form alkali solutions. These metals are very reactive; hence they have to be stored under oil to protect them from corrosion by air and waterwaterwater

5 0

1 year ago

Antacids work to relieve stomach acids because of which of the following types of reactions?

Anastaziya [24]

<u>Answer:</u> The correct answer is Option B.

<u>Explanation:</u>

Decomposition is a type of chemical reaction in which larger compound breaks down into two or more smaller compounds.

$AB\rightarrow A+B$

Double displacement reactions is defined as the chemical reaction in which exchange of ions takes place.

$AB+CD\rightarrow AD+CB$

Synthesis reaction is a type of reaction in which two or more smaller compounds combines to form a single large compound.

$A+B\rightarrow AB$

Single displacement reaction is a type of reaction in which a more reactive metal displaces a less reactive metal from its chemical reaction.

$A+BC\rightarrow AC+B$

In stomach, an acid is present known as hydrochloric acid and to neutralize its effect, antacid is taken which has $CaCO_$ as a component.

The reaction between HCl and $CaCO_3$ is a type of neutralization reaction and it is a type of double displacement reaction.

The equation between the two follows:

$CaCO_3+HCl\rightarrow CaCl_2+H_2O+CO_2$

Hence, the correct answer is Option B.

4 0

2 years ago

1. Use the following equation:

fenix001 [56]

Answer:

7.28 mol

Explanation:

2 NaOH + H₂SO₄ = 2 H₂O + Na₂SO₄ -------------------(1)

mole fraction for the reaction is;

2 : 1 = 2 : 1

Number of moles of H₂SO₄ = 7.28 mol

1 mol of H₂SO₄ shall form 1 mole of Na₂SO₄

therefore,

7.28 mol of H₂SO₄ shall form 7.28 mole of Na₂SO₄

8 0

2 years ago

Read 2 more answers

Which of the following has dispersion forces as its only intermolecular force? A) CH4 B) HCl C) C6H13NH2 D) NaCl E) CH3Cl

Natali5045456 [20]

D is the right answer

4 0

2 years ago

The Milky Way Galaxy is one of

9966 [12]

Answer:

Billions in the known universe!

Explanation:

Because there are approximately 100 billion galaxies in the observable universe.

Hope it helps!

7 0

3 years ago

Read 2 more answers