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
wariber [46]
3 years ago
5

Balance the equation: ___HgO → ___O2 + ___Hg

Chemistry
2 answers:
wel3 years ago
7 0

Answer: 2HgO\rightarrow O_2+2Hg

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical equation for the reaction is:

2HgO\rightarrow O_2+2Hg

Thus if the product is O_2 , there are 2 atoms of oxygen. When a coefficient 2 is placed in front of the reactant HgO, there will be 2 atoms of oxygen and 2 atoms of mercury. Thus a coeeficient of 2 is to be added to product side in front of Hg.

olchik [2.2K]3 years ago
3 0
2HgO -> 1 O2 + 2Hg

remember first there's 2 oxygens so then you check the other side and make it 2 too. then you see that now there's 2Hg and then you put a 2 on the other side to make it 2Hg too. balancing is just making sure the number of elements on one side equal the other.
You might be interested in
What is the concentration if 20 grams of NaOH was dissolved in enough water to make a 250 mL NaOH solution?
gizmo_the_mogwai [7]

Answer: 1 molar NaOH contains 40 grams of NaOH per every liter of water

Explanation:

so 2 M NaOH contains twice that amount, ie. 80 grams per liter. Then, ine 250 ml of weater, there should be 80/4 = 20 grams of solid NaOH dissolved.

3 0
3 years ago
Which element below is the most reactive? Hydrogen chlorine neon oxygen
trapecia [35]

Answer:

Chlorine

Explanation:

Chlorine has an atomic number of 17 and a configuration of 2, 8, 7. In the outermost shell, it has 7 seven electrons which means that it needs just one more electron to attain an octet configuration in that shell. Therefore it's can react quickly with any nearby nucleophile.

5 0
3 years ago
Read 2 more answers
What is solubility in chemistry?
svet-max [94.6K]

Answer:

Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. The resulting solution is called a saturated solution.

Explanation:

4 0
3 years ago
Read 2 more answers
SOMEONE PLEASE HELPPP​
xxTIMURxx [149]
A is the correct awnser Beacuse it ether right kne
5 0
3 years ago
How much heat is lost when 1277 g of H20 at 400 K is changed into ice at 263 K? Plz help I’ll give you brainliest 20 points
OLga [1]

The heat lost is -7.32*10^-^5J

The heat lost when the ice is cooled from 400k to 263K can be calculated using the formula of heat transfer.

<h3>Heat Transfer</h3>

This is the heat transferred from a body of higher temperature to a body of lower temperature.

Q = mc(\delta)T

  • Q = Heat Transfer
  • m = mass = 1277g
  • ΔT  = change in temperature

\delta T = (400 - 273) - (263 - 273) = \\&#10;\delta T = T_2 - T_1\\&#10;\delta T = -10 - 127\\&#10;\delta T = -137^0C

We converted the temperature from kelvin scale into Celsius scale and find the change in temperature.

Solving for heat transfer

Q = mc\delta T\\&#10;Q = 1277 * 4.186 * -137\\&#10;Q = -732336.514J

The heat loss is approximately -7.32*10^-^5J

Learn more on heat transfer here;

brainly.com/question/16055406

6 0
2 years ago
Other questions:
  • To which class of elements does copper (cu) belong: metal, metalloid, or nonmetal? identify three other elements in this class.
    7·1 answer
  • When hydrogen chloride ionizes in water, which reactant is the proton donor? chlorine which reactant is the proton acceptor? hyd
    5·1 answer
  • Polymerization is the process of linking smaller molecules to form long chains of higher molecular weight. True or False
    6·2 answers
  • The ground-state configuration of a negative ion of a halogen
    7·1 answer
  • In acidic solution, the sulfate ion can be used to react with a number of metal ions. One such reaction is SO42−(aq)+Sn2+(aq)→H2
    13·1 answer
  • Approximately how many mineral species have scientists identified?
    11·2 answers
  • How would u describe the cells that make up the parts of your eye?​
    12·1 answer
  • 4. Mineral used as fuel.
    10·2 answers
  • 12) A 17.92 g sample of copper was submerged in water, and the volume reading rose by 2.00 mL. What is the density of the copper
    12·1 answer
  • Carbon monoxide (CO) _____.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!