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
lianna [129]
3 years ago
12

I need help help me please

Chemistry
1 answer:
Rzqust [24]3 years ago
3 0

Answer:

C is the correct answer.

Explanation:

We can eliminate some answers immediately:

A is incorrect because nitrogen and hydrogen do not change their identity, they just combine into a new molecule that contains them. Notice how there are 2 nitrogen atoms and 6 hydrogen atoms on both sides of the equation.

B is incorrect because the first law of thermodynamics tells us that matter and energy will always be conserved, so the mass of the products must be equal to the mass of the reactants, not less than the mass of the reactants.

C is correct because balanced chemical equations help chemists predict how much product will form from certain amounts of reactants.

D is incorrect because this equation is showing the exact opposite. Molecular hydrogen and nitrogen can combine stoichiometrically to form ammonia.

You might be interested in
Convert the pressure 525.4 torr to kPa.
Virty [35]

Answer:

A. 70.0 kpa

Explanation:

Given

Pressure = 525.4 torr

Required

Convert to kPa

From standard unit of conversion;

1\ torr = 0.133\ kPa

Multiply both sides by 525.4

525.4 * 1\ torr = 525.4 * 0.133\ kpa

525.4\ torr = 70.047572\ kpa

525.4\ torr = 70.0\ kpa <em>(Approximated)</em>

<em>From the list of given options, option A is the closest answer after 525.4 torr is converted to its kpa equivalent</em>

8 0
3 years ago
Read 2 more answers
Which of these is a element: Salad, Sugar, Water, or Potassium
vovikov84 [41]

Potassium is a chemical element

Symbol: K

Atomic number: 19

Atomic mass: 39.0983 u ± 0.0001 u

Electron configuration: [Ar] 4s1

Melting point: 146.3°F (63.5°C)

3 0
4 years ago
If Iron (Fe) gained a proton what would it be?
Mkey [24]
If iron (Fe) gained a proton it would become cobalt (CO).
8 0
3 years ago
How is kilo gram is related to gram​
Levart [38]

Answer:

i know you think that they are just related because kg has kilo but they are related because

Explanation:

1000g makes 1 g.You see how much there is a difference in the solution because how is one=one thousand,well that is all i can help you from here.bye panta

4 0
3 years ago
Read 2 more answers
Name two fluid technologies that make use of air
nika2105 [10]

Answer: Refrigerator and fire extinguisher

Explanation: Refrigerator:An evaporator fan draws air from the refrigerator and blows it over the evaporator coils. The liquid refrigerant absorbs heat from the air and the air blows back into the refrigerator at a lower temperature, cooling the refrigerator. The liquid refrigerant starts to vaporize as it heats up and moves to the compressor.

Fire extinguisher:They work by smothering the fire: when you put a layer of powder or foam on the fire, you cut the fuel off from the oxygen around it, and the fire goes out. Carbon dioxide (CO2) extinguishers contain a mixture of liquid and gaseous carbon dioxide (a nonflammable gas).

7 0
3 years ago
Other questions:
  • What device is often used to locate primer and gunpowder particles by their characteristic size and shape?
    11·1 answer
  • 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of liquid nitroglycerin (C3H5NO33
    9·1 answer
  • For each metal complex give the coordination number for the metal species. m(nh34cl2
    5·1 answer
  • What are the different components that make up a chemical formula?
    12·1 answer
  • 2. How does systemic and pulmonary circulation differ from each another?
    9·1 answer
  • Is a transformer used to convert mechanical energy to electric energy
    8·1 answer
  • What is the charge of a neutron? neutral negative positive
    11·1 answer
  • Which of the following energy quantities is equivalent to 578 J?
    14·1 answer
  • A chlorine concentrations of 0.500 ppm is desired for water purification. What mass of chlorine must be added to 2500 L of water
    11·1 answer
  • A solution that is able to dissolve additional solute is best described as
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!