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gogolik [260]
3 years ago
13

Which of the following chemical equations is NOT correctly balanced?

Chemistry
1 answer:
forsale [732]3 years ago
6 0
To see if an equation is balanced, make sure that each side of the reaction has an equal number of the types of atoms.  The one that has a mismatch is A
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What happens to positive ion when an ionic solute dissolves in water?
klio [65]
When an ionic is placed in water a dissolving reaction occurs so the positive or negative ion are only attracted to each other
5 0
3 years ago
From a 2.875 g sample containing only iron, sand, and salt, 0.660 g of iron and 1.161 g of sand were separated and recovered. Wh
Serjik [45]

Answer:

36.66%

Explanation:

Step 1: Given data

  • Mass of iron: 0.660 g
  • Mass of sand: 1.161 g
  • Mass of the sample: 2.875 g
  • Mass of salt: ?

Step 2: Calculate the mass of salt

The mass of the sample is equal to the sum of the masses of the components.

m(sample) = m(iron) + m(sand) + m(salt)

m(salt) = m(sample) - m(iron) - m(sand)

m(salt) = 2.875 g - 0.660 g - 1.161 g

m(salt) = 1.054 g

Step 3: Calculate the percent of salt in the sample

We will use the following expression.

%(salt) = m(salt) / m(sample) × 100%

%(salt) = 1.054 g / 2.875 g × 100% = 36.66%

7 0
3 years ago
given the following reaction: CuO (s) + H2 (g) to Cu(s) + H2O (g). If 250 L of hydrogen gas are used to reduce copper (II) oxide
QveST [7]

24g is needed no explanation

4 0
2 years ago
Smog is a type of air pollution. It is a mixture of fog and smoke or other Airborne pollutants such as exhaust fumes. What is a
Tanya [424]
The answer is acid rain 

for study island your welcome :)
8 0
3 years ago
Write down three use of chlorine​
melomori [17]

Answer:

Chlorine is commonly used as an antiseptic and is used to make drinking water safe and to treat swimming pools. Large amounts of chlorine are used in many industrial processes, such as in the production of paper products, plastics, dyes, textiles, medicines, antiseptics, insecticides, solvents and paints.

Explanation:

hope this helped you

please mark as the brainliest (ㆁωㆁ)

4 0
3 years ago
Read 2 more answers
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