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
Triss [41]
3 years ago
11

Which of these is a mixture? A. Carbon Dioxide B. salt water C. calcium D. potassium

Chemistry
1 answer:
alukav5142 [94]3 years ago
7 0
Salt water is a mixture because you can separate the salt from the water once they are together. A solution is different
You might be interested in
A(n)
Sonja [21]
Organ system, because there are multiple organs that work together to help make the body function.
8 0
3 years ago
A conversion factor set up correctly to convert 15 inches to cm is _______.
sleet_krkn [62]

Answer:

e is the correct one , hope I helped u

6 0
3 years ago
What is the penetrating power of beta
zlopas [31]
The penetrating power of alpha rays, beta rays, and gamma rays varies greatly. Alpha particles can be blocked by a few pieces of paper. Beta particles pass through paper but are stopped by aluminum foil. Gamma rays are the most difficult to stop and require concrete, lead, or other heavy shielding to block them.
3 0
3 years ago
Physical science!!! please help
IgorLugansk [536]

Answer:

The correct answer is : No, because there are 4 hydrogen atoms on the reactants side and 2 on the products side.

Explanation:

NH_4NO_3\rightarrow N_2O+H_2O

The given reaction equation is not balanced because:

  • Number of hydrogen atoms  on both sides are not equal that is 4 on reactants side and 2 on products side.
  • Number of oxygen atoms on both sides are not equal that is 3 on reactants side and 2 on products side.

In a balanced chemical equation number of atoms of each elements are equal on both sides.

So, the balanced chemical equation will be:

NH_4NO_3\rightarrow N_2O+2H_2O

7 0
3 years ago
The change in enthalpy is the change in heat energy of a reaction and is calculated by (Hint: Hess' Law): Group of answer choice
Stolb23 [73]

Answer:

d. Sum of product enthalpies minus the sum of reactant enthalpies

Explanation:

The standard enthalpy change of a reaction (ΔH°rxn) can be calculated using the following expression:

ΔH°rxn = ∑n(products) × ΔH°f(products) - ∑n(reactants) × ΔH°f(reactants)

where,

ni are the moles of products and reactants

ΔH°f(i) are the standard enthalpies of formation of products and reactants

8 0
3 years ago
Other questions:
  • A teacher wants to perform a classroom demonstration that illustrates both chemical and physical changes. Which would be the bes
    12·2 answers
  • Engineers find a new metal that is stronger than steel but much lighter. This
    7·2 answers
  • Group one elements, such as lithium, sodium, and
    10·1 answer
  • When might a plot of ln[a] vs time not yield a straight line?
    7·1 answer
  • Which three terms are needed to describe the energy a base jumper has as she falls toward the ground ? APEX
    11·1 answer
  • What’s the answer to this question
    13·1 answer
  • Living organisms contain carbon compounds.
    14·2 answers
  • For the balanced equation shown below, what would be the limiting reagent if 80.2 grams of N2 were reacted
    14·1 answer
  • What does an ion have that an atom does not?
    15·1 answer
  • Why do you think evolution is important?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!