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
STALIN [3.7K]
3 years ago
13

A(n) ____________________ is a group of two or more atoms that are held together by chemical bonds. *

Chemistry
1 answer:
Kryger [21]3 years ago
6 0

Answer:

A molecule is a group of two or more atoms that are held together by chemical bonds.

Explanation:

You might be interested in
When scientists are ready to publish the results of their experiments, why is it important for them to include a description of
gizmo_the_mogwai [7]

Answer: To be able to not forget what have they done when they want to re-do it.

to make it easier for the next person to re-do the experiment.

Explanation:

the description of the procedure ensures that when the experiment  becomes of a success,specific steps are recorded for improvement of the experiment if maybe the experiment can be done at a short space of time.

3 0
3 years ago
A student investigates the properties of an unknown liquid substance in a beaker. The student finds the substance has a mass of
shtirl [24]

Answer:

The substance is a mixture because it left a white powder in the beaker when boiled.

Explanation:

8 0
3 years ago
What is the molality of a solution made by dissolving 137.9g of sucrose in 414.1g of water?
Daniel [21]

Answer: 2.71 moles of solute for every 1 kg of solvent.

Explanation: As you know, the molality of a solution tells you the number of moles of solute present for every 1 kg of the solvent.This means that the first thing that you need to do here is to figure out how many grams of water are present in your sample. To do that, use the density of water.500.mL⋅1.00 g1mL=500. g Next, use the molar mass of the solute to determine how many moles are present in the sample.115g⋅1 mole NanO385.0g=1.353 moles NaNO3So, you know that this solution will contain 1.353moles of sodium nitrate, the solute, for 500. g of water, the solvent.In order to find the molality of the solution, you must figure out how many moles of solute would be present for 1 kg=103g of water.103g water⋅1.353 moles NaNO3500.g water=2.706 moles NaNO3You can thus say that the molality of the solution is equal to molality=2.706 mol kg−1≈2.71 mol kg−1 The answer is rounded to three sig figs.

8 0
3 years ago
A new substance is formed when the?
quester [9]

Answer:

A chemical reaction happens when substances break apart or combine to form one or more new substances.

Explanation:

hope its right.

4 0
3 years ago
The change of phase from a vapor to a liquid is called _____. evaporation condensation distillation vaporization
anastassius [24]
Its condensation

the vapour has a lot of kinetic energy but if it cools down it loses that energy and condenses into a liquid 

hope that helps 
5 0
3 years ago
Read 2 more answers
Other questions:
  • Activity C: Hydrolysis of Carbohydrates As discussed earlier, disaccharides are composed of two monosaccharides linked together.
    15·1 answer
  • Which is a characteristic of nuclear fusion but NOT nuclear fission?
    15·2 answers
  • What hybridization is required for central atoms that have a tetrahedral arrangement of electron pairs? A trigo- nal planar arra
    6·1 answer
  • Is precipitate in water an electrolyte solution
    8·1 answer
  • Two atoms interact with each other as shown by the equation. Complete the equation by filling in the missing parts,
    13·2 answers
  • What does chemical reaction describe
    6·1 answer
  • The acetylene tank contains 35.0 mol C2H2, and the oxygen tank contains 84.0 mol O2.
    6·2 answers
  • What is chemical equilibrium?​
    13·2 answers
  • Pls hurrry<br>what are greenhouse effect 1 paragraph and come friends
    8·1 answer
  • Why are unbalanced equations NOT useful in<br> chemistry?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!