3 years ago

14. pH value are basic are greater than what number while acids are have a pH less than

Chemistry

1 answer:

Mice21 [21]3 years ago

5 0

Answer:

Less than 7 ph value are acidic. Greater than 7 ph value are basic.

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When the following equation is balanced, the coefficient of Al is ___ Al (s) + H20 (1) - Al(OH)3 (s) + H2 (g) A) 4 B) 1 C) 5 D)

Salsk061 [2.6K]

Answer: The correct answer is Option E.

Explanation:

Every balanced chemical equation follows law of conservation of mass.

This law states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The balanced chemical equation for the reaction of aluminium and water follows:

$2Al(s)+6H_2O(l)\rightarrow 2Al(OH)_3(s)+3H_2(g)$

The coefficient of Aluminium is 2.

Hence, the correct answer is Option E.

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3 years ago

The half reaction of an oxidation-reduction shows that iron gains electrons. What does this electron gain mean or iron?

ale4655 [162]

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C. its reduced

Explanation:

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In which part of the digestive system does a chemical change of the food first occur?

algol [13]

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Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates.

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3 years ago

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What element has 1 proton, 1 neutron, and 2 electrons?

Olegator [25]

Answer:

Tritium

Tritium is a hydrogen isotope consisting of one proton, two neutrons and one electron. It is radioactive, with a half-life of 12.32 years.

Explanation:

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3 years ago

Which statement about distinguishing an ionic compound from a covalent compound by its formula is true?

zhenek [66]

A.
It is impossible to tell from the formula.
That's the right answer.

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4 years ago