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uranmaximum [27]
2 years ago
9

If you make a solution using 1.0 mol KBr in 1.0 kg water, how will the vapor pressure of this solution compare to the vapor pres

sure of a solution made from 1.0 mol sucrose in 1.0 kg water?
a) it will be half as large
b) it will be the same
c) it will be twice as large
d) it will be four times as large
Chemistry
2 answers:
____ [38]2 years ago
5 0

Answer:

it will be twice as large

Gennadij [26K]2 years ago
5 0

Answer: a. it will be half as large

Explanation:

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Which statement is true for a solution when its concentration of hydroxide ions increases? It becomes more acidic. It becomes le
makvit [3.9K]

Answer:

Its pH value increases.

Explanation:

pH is the measure of alkalinity or acidity of a compound.

pH = - log [H+]

and pH + pOH = 14

where pOH is the measure of basicity of a solution, given by -log[OH-]

As a solution gets more basic that is higher [OH-], the pH increases, and on the other hand, as the pH of a solution decreases by one pH unit, the concentration of H+ increases by ten times.

5 0
3 years ago
Read 2 more answers
Calculate how much heat is absorbed by a sample that weighs 12 kilograms, has a specific heat of 0.231 kg/CJ, and is heated from
Andrei [34K]

Answer:

97 J

Explanation:

Step 1: Given data

  • Mass of the sample (m): 12 kg
  • Specific heat capacity (c): 0.231 J/kg.°C (this can also be expressed as 0.231 J/kg.K)
  • Initial temperature: 45 K
  • Final temperature: 80 K

Step 2: Calculate the temperature change

ΔT = 80 K - 45 K = 35 K

Step 3: Calculate the heat required (Q)

We will use the following expression.

Q = c × m × ΔT

Q = 0.231 J/kg.K × 12 kg × 35 K = 97 J

4 0
3 years ago
Land is a natural resource because it is used by living things to meet their needs. O True
blondinia [14]

Answer:

Absolutely True :) cause we use it all the time

7 0
3 years ago
What is formed when atoms of different elements combined.
ki77a [65]

Answer:A molecule is formed when two or more atoms join together chemically.

Explanation:

6 0
3 years ago
How many moles of gas are contained in a rigid, sealed, 5 L container, at 1 atm of pressure and 22 oc?
Ugo [173]
The ideal gas law is: PV=nRT
Pressure
Volume
n= moles
R= gas constant
Temperature in Kelvin
(Degrees in celsius +273)
n= PV/RT
(1.00atm)(5.00L)/(.08026)(295K)= .207mol of gas
7 0
3 years ago
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