In which type of chemical reaction do two or more substances combine to form one substance?

Chemistry

1 answer:

Rufina [12.5K]3 years ago

4 0

Answer:

Synthesis!!

A reaction in which two or more substances combine together to form a single product is known as synthesis reaction.

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Mkey [24]

1. L
Number one because the lines match up

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Which expression is equal to the number of grams in 2.43 kilograms

KiRa [710]

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People in the United States know that water boils at 212 degrees Fahrenheit. In Europe, people know that water boils at 100 degr

snow_tiger [21]

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The table shows a chemical equation and the dimensional analysis used by a student to calculate the number of moles of Ba3N2 req

UNO [17]

This problem is providing the chemical reaction whereby barium nitride reacts with water to produce barium hydroxide and ammonia, so the number of moles of barium nitride are required in order to produce 8.3 moles of ammonia. It asks for us to evaluate the student's setup, so we conclude the answer is C. "1 mol of NH3 should be replaced with 2 mol of NH3", according to:

<h3>Mole ratios:</h3>

In chemistry, stoichiometric calculations are used to figure out the moles or mass of a substance, given information about another one in the reaction. In this case, for the given chemical equation:

$Ba_3N_2 + 6H_2O \rightarrow 3Ba(OH)_2 + 2NH_3$

We evidence a 1:2 mole ratio of barium nitride to ammonia, for that reason, the student's setup:

$8.3 mol NH_3 * \frac{1 mol Ba_3N_2 }{1 mol NH_3}$

Is incorrect, because the ammonia must be accompanied by a 2 rather than the 1 it is given there:

$8.3 mol NH_3 * \frac{1 mol Ba_3N_2 }{2mol NH_3}$

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Learn more about mole ratios: brainly.com/question/15288923

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zloy xaker [14]

Answer:

A). An atom is an indivisible hard-sphere.

Explanation:

The 'Atomic Theory' of Dalton is characterized as the earliest model(came in 1803) which described the atoms as the indivisible and resistant spheres. He used the example of watermelon to elaborate that the atoms of a specific element share similar characteristics and the atoms of distinct elements differ in their mass as well as their size. Thus, option A is the correct answer.

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3 years ago