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
lisabon 2012 [21]
2 years ago
15

Match the boxes helppppppp

Chemistry
1 answer:
lesantik [10]2 years ago
3 0

Answer:

?

Explanation:

You might be interested in
What causes a gas to act in a non ideal manner?
il63 [147K]
"The forces of attraction and the volume of the molecules" (as opposed to the volume of the container the gas is in).
8 0
3 years ago
A solution of water (kf=1.86 ∘c/m) and glucose freezes at − 2.15 ∘c. what is the molal concentration of glucose in this solution
Reil [10]
<span>1.16 moles/liter The equation for freezing point depression in an ideal solution is ΔTF = KF * b * i where ΔTF = depression in freezing point, defined as TF (pure) â’ TF (solution). So in this case ΔTF = 2.15 KF = cryoscopic constant of the solvent (given as 1.86 âc/m) b = molality of solute i = van 't Hoff factor (number of ions of solute produced per molecule of solute). For glucose, that will be 1. Solving for b, we get ΔTF = KF * b * i ΔTF/KF = b * i ΔTF/(KF*i) = b And substuting known values. ΔTF/(KF*i) = b 2.15âc/(1.86âc/m * 1) = b 2.15/(1.86 1/m) = b 1.155913978 m = b So the molarity of the solution is 1.16 moles/liter to 3 significant figures.</span>
7 0
3 years ago
When 1 mole of H2(g) reacts with F2(g) to form HF(g) according to the following equation, 542 kJ of energy are evolved H2(g) + F
topjm [15]

Answer: The reaction is exothermic. The value of q is  -542 kJ.

Explanation:

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and  for the reaction comes out to be positive.

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and  for the reaction comes out to be negative.

Thus H_2(g)+F_2(g)\rightarrow 2HF(g) evolves heat , it is exothermic in nature. The value of q is -542kJ.

7 0
2 years ago
33. At the right of a chemical equation are
Bas_tet [7]

Answer:

Reactant

Explanation:

hope this helps you

4 0
2 years ago
Periodic trends are examined by looking down the _ of elements or by looking across the _ of the elements
nikklg [1K]

Answer: yo sorry this a hard one

Explanation:

bro

6 0
2 years ago
Other questions:
  • Calculate delta g reaction at 298 k under the conditions 2hg+o2
    10·1 answer
  • A chemical that helps plant cells grow larger is a what?
    14·1 answer
  • Which group of nuclear emissions is listed in order of increasing charge?
    9·2 answers
  • Question 12solid sodium and chlorine gas combine to form solid sodium chloride .write a balanced chemical equation for this reac
    5·1 answer
  • Which formula can be used to calculate the molar mass of ammonia (NH3)?
    14·1 answer
  • How do you find the number of protons in an atom?
    12·2 answers
  • Given the density of iron (Fe) is 7.87 g/cm3, determine the mass of iron (in grams) in a rectangle block with the dimensions of
    12·1 answer
  • How many atoms are present in 0.45 moles of P4010
    7·1 answer
  • A summary about liquid
    9·2 answers
  • What volume (in L) of a 4.13 M lithium nitrate (LINO3) solution would be needed to make 195 mL of a 1.05 M solution by dilution?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!