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
OLga [1]
2 years ago
15

Can matter be created or destroyed? Yes or No

Chemistry
2 answers:
Stells [14]2 years ago
6 0

Answer:

none is created or destroyed. This concept is called the Law of Conservation of Mass.

anzhelika [568]2 years ago
5 0

Answer:

No

Explanation:

The same amount of matter is present before and after chemical and physical changes. Matter cannot be created or destroyed

You might be interested in
A 100.0-mL sample of 1.00 M NaOH is mixed with 50.0 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup calorimeter fitted with a
worty [1.4K]

Answer:

THE ENTHALPY CHANGE IN KJ/MOLE IS +114 KJ/MOLE.

Explanation:

Heat = mass * specific heat capacity * temperature rise

Total volume = 100 + 50 = 150 mL

Total mass = density * volume

Total mass = 1 * 150 mL = 150 g

So therefore, the heat evolved during the reaction is:

Heat = 150 * 4.18 * ( 31.4 - 22.3)

Heat = 150 * 4.18 * 9.1

Heat = 5705.7 J

Equation for the reaction:

2 NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2 H2O(l)  

From the equation, 2 moles of NaOH reacts with 1 mole of H2SO4 to produce 1 mole of Na2SO4 and 2 moles of water

50 mL of 1 M of H2SO4 contains

50 * 1 / 1000 mole of acid

= 0.05 mole of acid

The production of 1 mole of water evolved 5705.7 J of heat and hence the enthalpy changein kJ per mole will be:

0.05 mole of H2SO4 produces 5705.7 J of heat

1 mole of H2SO4 will produce 5705.7 / 0.05 J

= 114,114 J / mole

In kj/mole = 114 kJ/mole.

Hence, the enthalpy change of the reaction in kJ /mole is +114 kJ/mole.

5 0
3 years ago
PLEASE! :( Two aqueous solutions of AgNO3 and NaCl are mixed. Which of the following diagrams best represents the mixture? For s
-BARSIC- [3]

Answer:

NaCl + Ag(NO₃) --> Na(NO₃) + AgCl

Explanation:

Chemical equation:

NaCl + Ag(NO₃) --> Na(NO₃) + AgCl

The given reaction represent the double displacement reaction. Anion and cation of both reactant exchange with each others.

The anion of sodium chloride(Cl⁻) combine with cation of silver nitrate Ag⁺ and  NO₃⁻ combine with Na⁺.

The third equation is correct while others are in correct.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

SORRY CAUSE IDK IF THAT HELPED :(

5 0
3 years ago
Ratio of atoms in Hydrochloric acid
Lesechka [4]

One to one ratio

The formula of hydrochloric acid is HCl so there is one atomic of hydrogen and one atom of oxygen

7 0
3 years ago
The diagram below represents a sodium atom bonding to a chlorine atom to form sodium chlorine.
Sergio [31]
Sodium Chloride is a compound.
8 0
3 years ago
Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas fo
Artyom0805 [142]

Answer:

.

Explanation:

3 0
3 years ago
Other questions:
  • Which half-reaction correctly represents reduction?
    6·1 answer
  • Explain the general process of nuclear fission. What is created from fission?
    12·2 answers
  • Under certain conditions, the solid and liquid states of water can exist in equilibrium. How are these conditions indicated on t
    12·2 answers
  • Please explain to me how to answer no.2 questions
    12·1 answer
  • The inca "City of the sun"was ​
    6·1 answer
  • Corey's Science Experiment 1. Purpose: To determine the effect that completely burning a log has on the weight of the log and to
    5·2 answers
  • Please help will reward brainliest
    14·1 answer
  • When NH3(g) reacts with O2(g), the products of the combustion are NO(g) and H2O(g). What volume of O2(g) is required to react wi
    5·1 answer
  • What is a bowl-shaped crater thought to<br> be caused by the collapse of an empty<br> magma chamber?
    15·1 answer
  • Which of the following is a balanced equation for Copper (II) sulfate + aluminum --&gt; aluminum sulfate+solid copper?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!