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schepotkina [342]
3 years ago
8

Potassium (k combines with magnesium bromide (mgbr2 to form potassium bromide (kbr and magnesium (mg during a single replacement

reaction. which of the following shows the balanced chemical equation for this reaction?
Chemistry
2 answers:
Agata [3.3K]3 years ago
5 0
In balancing reactions, the number of atoms on each side should be of equal number. It is the most important rule in reactions. Also, we should know the correct substances involved in the reaction. We do as follows:

2K + MgBr2 = 2KBr + Mg
AleksAgata [21]3 years ago
3 0

Answer:

The reaction is:

2K(s) + MgBr₂(s) --> 2KBr(s) + Mg(s)

Explanation:

The reaction between potassium and magnesium bromide can be balanced by considering the fact that one mole of magnesium bromide will react with two moles of potassium to give two moles of potassium bromide and one mole of Magnesium.

Thus the balanced equation will be:

2K(s) + MgBr₂(s) --> 2KBr(s) + Mg(s)

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Bond [772]

Answer:

increasing the number of molecules that have sufficient kinetic energy to react.

Explanation:

An increase in temperature affects the reaction rate by increasing the number of molecules that have sufficient kinetic energy to react.

or we say; temperature increase, leads to an increase in the amount of collisions between molecules.

4 0
3 years ago
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The molar mass of I2 is 253.80 g/mol, and the molar mass of NI3 is 394.71 g/mol. How many moles of I2 will form 3.58 g of NI3?
Nat2105 [25]
To answer the problem above first we need to find the difference of molar mass of NI3 from I2, 394.71 g/mol - 253.80 g/mol = 140.91 g/mol. Knowing the molar mass of the difference of NI3 from I2, in equation mass (g) / moles (mol) = molar mass, then we substitute. 3.58g / moles = 140.91 g/mol.
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6 0
4 years ago
Indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances.
Galina-37 [17]

Explanation:

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c)PH>7

d) PH>7

5 0
3 years ago
PLEASEEE HELPPPP ASAP!!
Goshia [24]

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8 0
3 years ago
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bonufazy [111]
We know that acids have a pH of under 7. 

We also need to:
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