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3 years ago

Which of these equations is balanced?

Chemistry

2 answers:

aev [14]3 years ago

6 0

B is the answer. For an equation to be balanced there must be the same amount of each element on the two sides. The only one where this is the case is B.

mixas84 [53]3 years ago

6 0

The Correct Answer is B

B) 2NaCl + H2SO4 ----> Na2SO4 + 2HCl

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Care needs to be taken when adding acid to base because

nikitadnepr [17]

Mixing an acid and a base results in neutralization, but the results are potentially dangerous. No matter which acid or base is used, the resulting solution is water and varying types of salt. The process of neutralization often involves the substances heating up when they come together. If the solution heats up too much or too fast, a violent explosion or the creation of harmful or flammable gases is a possibility. This occurs when the chemicals are mixed too quickly, the acid and base are too strong or if there is no available salt to be made in the solution.

3 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

3 years ago

What does Avogadro's number represent?

DIA [1.3K]

The number 6.022 × 1023 indicating the number of atoms or molecules in a mole of any substance

5 0

3 years ago

Read 2 more answers

What is the name of the people who hid the Dead Seas Scrolls. When did they live at Qumran?

Shkiper50 [21]

It was named the Qumran seas scrolls.

3 0

3 years ago

If Sally has 250 grams of cement, how many kilograms does she have? How many milligrams?

MissTica

Answer:

0.250 kg

2500 g

Explanation:

1 kg = 1000g

1g = 10 mg

8 0

1 year ago