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
ivolga24 [154]
3 years ago
6

Balance the following chemical equation. ____H2O ---> ____H2 + ____O2

Chemistry
1 answer:
tekilochka [14]3 years ago
7 0
The answer is C . 2,2,1
You might be interested in
What type of force holds particles together ?​
Rashid [163]

Answer:

strong nuclear force

Explanation:

4 0
3 years ago
Experiments show that each of the following redox reactions is second-order overall: (1) NO2(g) + CO(g) → NO(g) + CO2(g) (2) NO(
MatroZZZ [7]

Answer:

a) rate law1 = k[NO2]²

b) rate law2 = k[NO][O3]

Explanation:

NO2(g) + CO(g) → NO(g) + CO2(g)

NO(g) + O3(g) → NO2(g) + O2(g)

When [NO2] in reaction 1 is doubled, the reaction quadruples

Rxn is second order.

rate law1= [NO2]^a [CO]^b

rate law1= [NO2]² [CO]^0

rate law1 = k[NO2]²

When [NO] in reaction 2 is doubled, the rate doubles.

Rxn is first order

The ratio is 1:1

this makes the rate law2 = k[NO][O3]

6 0
3 years ago
A fixed, single pulley that is used to lift a block does which one of the following?
olga55 [171]
The answer is C, it makes the block easier to lift by changing the direction of the force needed to lift it 
4 0
3 years ago
Read 2 more answers
The heat required to raise the temperature of 12g of water from 16 C to 21 C is:
NemiM [27]

Answer:

The heat required to raise the temperature of 12g of water from 16 C to 21 C is 60 cal.

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

There is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

  • Q=?
  • c= 4.186 \frac{J}{g*C}
  • m= 12 g
  • ΔT=Tfinal - Tinitial= 21 °C - 16°C= 5 °C

Replacing:

Q= 4.186 \frac{J}{g*C} *12 g *5 °C

Solving:

Q=251.16 J

Since 1 J is equal to 0.2388 cal, then the following rule of three can be applied: if 1 J is equal to 0.2388 cal, then 251.16 J to how many cal are?

cal=\frac{251.16 J * 0.2388 cal}{1 J}

cal= 59.98 ≅ 60

<u><em>The heat required to raise the temperature of 12g of water from 16 C to 21 C is 60 cal.</em></u>

3 0
3 years ago
C2H4+
klasskru [66]

Answer:

A. Theoretical yield = 3.51g

B. %yield = 75%

Explanation:

The balanced equation for the reaction is given below:

C2H4 + 3O2 —> 2CO2 + 2H2O

Molar Mass of O2 = 16 x 2 = 32g/mol

Mass of O2 from the balanced equation = 3 x 32 = 96

Molar Mass of H20 = (2x1) + 16 = 18g/mol

Mass of H2O from the balanced equation = 2 x 18 = 36g

A. From the equation,

96g of O2 produced 36g of H2O

Therefore, 9.35g of O2 will produce = (9.35 x 36)/96 = 3.51g of H2O

Therefore,theoretical yield of water (H2O) = 3.51g

B. Theoretical yield = 3.51

Actual yield = 2.63g

%yield =?

%yield = Actual yield/Theoretical yield x 100

%yield = 2.63/3.51

%yield = 75%

4 0
3 years ago
Other questions:
  • This is dimensional analysis-
    12·1 answer
  • What is the justification required to make an arrest?
    6·1 answer
  • Provide examples of physical weathering and chemical weathering in the chart below
    8·1 answer
  • In a titration of 0.35 M HCl and 0.35 M NaOH, how much NaOH should be added to 45.0 ml of HCl to completely neutralize the acid?
    6·2 answers
  • HELPPPP ITS DUE TODAY
    5·1 answer
  • Predict the effect of adding a non competitive inhibitor to the reaction mixture on the rate of reaction at a high substrate con
    9·1 answer
  • Pls help, How is stoichiometry used to calculate amounts of substances in a chemical reaction?
    15·1 answer
  • Two elements are studied. One has atomic number X and one has atomic number X+2. It is known that element X is a halogen. To wha
    14·1 answer
  • What makes physical change a physical change and a chemical change a chemical change
    10·2 answers
  • How were the compounds that formed when calcium ion solution was mixed with the anion solutions different from the compounds tha
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!