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
Troyanec [42]
3 years ago
9

Can someone help me i'm confused

Chemistry
1 answer:
Rashid [163]3 years ago
7 0
Answer: A

Reactants combine to make a larger atom and release a neutron. Only A does that.
You might be interested in
Human body cells are made by doing what ? ​
frozen [14]

Answer:

When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.

Explanation:

6 0
3 years ago
Calculate the density of helium if a balloon with a capacity of 5.00 L holds 0.890 g.
liubo4ka [24]

Answer:

Explanation:

Density is m/V. Also, 1 liter = 1000 cm^3. So, we get 0.890/(5*1000) = 1.78*10^{-4} g/cm^3. You can convert this to kg/m^3 as well by multiplying it by 10. Depends which one you want.

5 0
3 years ago
A beaker contains 100.0 mL of pure water. A second beaker contains 100.0 mL of seawater. The two beakers are left side by side o
shusha [124]

Answer: The beaker in which water level has decreased more is the one that contains pure water.

Explanation: Even when water is not heated it can evaporate, that is because molecules move at different speed and those that are closer to surface can break the gass pressure and scape as water vapor.

The movement of molecules of water can be affected by the presence of solutes (salts or other soluble compounds) and increase the evaporation temperature. For this particular case, molecules of salt atract the water molecules (remember salt has ions and water is a dipole with partial charges) and do not let the water move freely which avoid them to scape to the surface.

3 0
3 years ago
How many grams of C3H8
Tresset [83]

Answer:

91.28 g

Explanation:

7 0
2 years ago
A reaction at −8.0°C evolves 854.mmol of boron trifluoride gas. Calculate the volume of boron trifluoride gas that is collected.
Bas_tet [7]

Answer:  The volume of boron trifluoride gas that is collected is 18.6 L

Explanation:

According to the ideal gas equation:

PV=nRT

P = Pressure of the gas = 1 atm

V= Volume of the gas= ?

T= Temperature of the gas in kelvin =-8.0^0C=273+(-8.0)=265K

R= Gas constant = 0.0821Latm/Kmol

n=  moles of gas=  854 mmol = 0.854 mol   (1mmol=0.001mol)

1atm\times V=0.854\times 0.0821\times 265

V=18.6L

Thus volume of boron trifluoride gas that is collected is 18.6 L

5 0
2 years ago
Other questions:
  • What is the similarity between chalk, wood, candle and cotton?
    10·1 answer
  • A partially-enclosed coastal region where sea water mixes with freshwater is called a(n) _______.
    14·1 answer
  • How many electrons are in a Cd3+ ion ?
    10·2 answers
  • Fuel cell cars that use hydrogen as fuel have the potential to be quiet, produce low emissions, and require less maintenance tha
    5·2 answers
  • Which statements correctly describe atmospheric pressure?
    10·1 answer
  • How many grams of copper nitrate can be produced from 0.78 grams of silver nitrate and excess copper?
    11·1 answer
  • What is the quantity of atoms in KMnO4 ?
    12·2 answers
  • Why are vitamins and minerals are not classified as a food?
    7·1 answer
  • Similar figures have the same ______ but different ______.
    10·2 answers
  • UHH what in the world is this??? i dont even know when we were assigned to do this!!ughh plz help
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!