1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lisabon 2012 [21]
3 years ago
7

What type of chemical reaction occurs when more energy is released during a chemical reaction than is needed to start a chemical

reaction
Chemistry
1 answer:
Mamont248 [21]3 years ago
4 0

Answer:

exothermic reaction

Explanation:

your welcome :)

You might be interested in
If an unbalanced force is applied to an object what my happen to the object
Kitty [74]

Answer:

it falls

Explanation:

5 0
3 years ago
Number of
Karolina [17]
Mass plus atomic and number

8 0
3 years ago
Give examples to three solutions you commonly use and identify the solvent and solutes that make it each up.
8_murik_8 [283]
Mouthwash:
solvent - water
solute - alcohols

vinegar:
solvent - water
solute - acetic acid

bleach:
solvent - water
solute - sodium hypochlorite

hope this helps!!

8 0
3 years ago
Read 2 more answers
A steel container with a movable piston contains 2.00 g of helium which was held at a constant temperature of 25 °C. Additional
shtirl [24]

Answer: D) 1.00 g

Explanation:

According to the Avogadro's law, the volume of gas is directly proportional to the number of moles of gas at same pressure and temperature. That means,

V\propto n

or,

\frac{V_1}{V_2}=\frac{n_1}{n_2}

where,

V_1 = initial volume of gas  = 2.00 L

V_2 = final volume of gas = 3.00 L

n_1 = initial moles of gas  =\frac{\text {Given mass of helium}}{\text {molar mass of helium}}=\frac{2.00g}{4g/mol}=0.500mol

n_2 = final moles of gas  = ?

Now we put all the given values in this formula, we get

\frac{2.00L}{3.00L}=\frac{0.500mol}{n_2}

n_2=0.75mole

Mass of helium =moles\times {\text {molar mass}}=0.75\times 4=3.00g

Thus mass of helium added = (3.00-2.00) g = 1.00 g

4 0
3 years ago
0.0136 g + 2.70 × 10-4 g - 4.21 × 10-3 g = ?
melisa1 [442]

Answer choice is , 2

3 0
3 years ago
Other questions:
  • Potassium chloride and oxygen gas are formed upon heating potassium
    6·1 answer
  • These substances are all ____. H2O2 Li NaCl O2 Elements Pure Substances Molecules Compounds
    8·2 answers
  • Explain how a cell is like your school or town. What is the nucleus of your town? The mitochondria?
    13·1 answer
  • Complete the chemical equation for this reaction.
    11·1 answer
  • Identify the limiting reactant when 2.20 grams of magnesium reacts with 4.5 L of oxygen gas at STP to produce magnesium oxide. 2
    9·1 answer
  • How much force is needed to accelerate a 1,000kg car at a rate of 8m/s2
    8·2 answers
  • As a bond between a hydrogen atom and a
    13·1 answer
  • Why is ba(cn)2 soluble
    7·1 answer
  • List the symbols for the noble gases
    11·1 answer
  • A 1. 00 ml sample of an unknown gas effuses in 11. 1 min. an equal volume of h2 in the same apparatus under the same conditions
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!