Ask question

Ask question

All categories

3 years ago

9

To balance a chemical equation, one: a. changes the subscripts of the formulas. b. changes the coefficients of the formulas. c.

eliminates some of the products or reactants. d. changes the chemical symbols of the elements.

1 answer:

AfilCa [17]3 years ago

4 0

<span>B. Changes the coefficients of the formulas.</span>

You might be interested in

2.04 thermal and chemical change

bazaltina [42]

Explanation:

thermal changes are those in which heat exchange is involved like endothermic and exothermic

while in chemical changes collision between the reactant occurs which result into product

8 0

2 years ago

Why is hydrogen the most common element in the universe?

Scorpion4ik [409]

The universe<span> today is observed to contain one helium atom for every ten or eleven atoms of </span><span>hydrogen</span>

8 0

3 years ago

Read 2 more answers

What happen to the temperature of ice when rock salt is added

koban [17]

When salt is added to ice the temperature of the ice will even drop or the ice will melt

7 0

3 years ago

Read 2 more answers

Under the right conditions aluminum will react with chlorine to produce aluminum chloride.

salantis [7]

Answer:

$m_{Al}=9.42gAl$

Explanation:

Hello there!

In this case, according to the given chemical reaction:

2 Al + 3 Cl2 --> 2 AlCl3

Whereas there is a 2:3 mole ratio of aluminum to chlorine; it will be possible for us to calculate the required grams of aluminum by using the equality 22.4 L = 1 mol, the aforementioned mole ratio and the atomic mass of aluminum (27.0 g/mol) to obtain:

$m_{Al}=11.727LCl_2*\frac{1molCl_2}{22.4LCl_2}*\frac{2molAl}{3molCl_2} *\frac{27.0gAl}{1molAl} \\\\m_{Al}=9.42gAl$

Regards!

8 0

3 years ago

A block of ice with a total mass of of 25 grams is beginning to melt. How will this physical change affect the mass of the block

NISA [10]

It does not affect the mass, it only affects the outwards appearance of the ice/water.

7 0

4 years ago