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
kobusy [5.1K]
4 years ago
5

11. If two substances react and the temperature of the mixture decreases, the reaction

Chemistry
1 answer:
Goshia [24]4 years ago
5 0

Answer:

a.endothermic reaction

You might be interested in
An aqueous sodium acetate, NaC2H3O2 , solution is made by dissolving 0.395 mol NaC2H3O2 in 0.505 kg of water. Calculate the mola
liq [111]

<u>Answer:</u> The molality of NaC_2H_3O_2 solution is 0.782 m

<u>Explanation:</u>

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg. The formula used to calculate molality:

\text{Molality of solution}=\frac{\text{Moles of solute}}{\text{Mass of solvent (in kg)}} .....(1)

Given values:

Moles of NaC_2H_3O_2 = 0.395 mol

Mass of solvent (water) = 0.505 kg

Putting values in equation 1, we get:

\text{Molality of }NaC_2H_3O_2=\frac{0.395mol}{0.505kg}\\\\\text{Molality of }NaC_2H_3O_2=0.782m

Hence, the molality of NaC_2H_3O_2 solution is 0.782 m

8 0
3 years ago
What type of wave is a s-wave and how does energy move through the wave
Blizzard [7]
In S or shear waves, rock oscillates perpendicular to the direction of wave propagation.
3 0
3 years ago
What property of matter makes metal pots a good choice for heating food.
Korvikt [17]
The answer is B. Thermal Conductivity

4 0
3 years ago
Read 2 more answers
7. What is the unit for Mass?<br> *<br> 1 poin<br> Kg<br> S<br> N<br> m/s
olga_2 [115]

Answer:

kilograms is the unit for mass

6 0
3 years ago
The largest population that an environment can support is called _____.
Digiron [165]

Answer:

D) caring capacity

Explanation:

<h3>The largest population that an environment can support is called its carrying capacity.</h3>

<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Over a period of time a student observed a small tadpole changing into a frog. Which of the following explains the physical chan
    12·2 answers
  • When conducting a medication house cleaning, and after sorting all of the client's drugs into two groups (drugs currently being
    12·2 answers
  • Which three main elements make up the structure of organic molecules?
    13·1 answer
  • 2. A student reacts 6.9 g of lithium chloride and enough copper (I) nitrate. Calculate the mass of precipitate expected.
    15·1 answer
  • What is the total concentration of an acetic acid solution (ch3cooh) with a ph of 3.5? acetic acid ka = 1.76 x 10-5 m?
    9·1 answer
  • Milk is to carton AS. is to pitcher
    9·2 answers
  • (c) Draw the structure of any two aminoacids which bears a heterocyclic unit as all or part of the R side chain of the aminoacid
    7·1 answer
  • From Young's experiment, how does the frequency of light affect the number of lines observed?
    13·2 answers
  • Help me please| (• ◡•)|​
    10·1 answer
  • What is the name for Cl₇Br₄ *
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!