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
Pavel [41]
3 years ago
5

Don’t know how to do #2 someone help

Chemistry
2 answers:
telo118 [61]3 years ago
5 0
I think the answer is a.
worty [1.4K]3 years ago
5 0
Adding ice to the tea.
You might be interested in
A bathtub is filled with 100 L of water. A cat jumps in and the volume rises to 125 L. If the cat has a mass of
kirza4 [7]

Answer:

<h2>The answer is 3.2 g/L</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass of cat = 400 g

volume = final volume of water - initial volume of water

volume = 125 - 100 = 25 L

The density of the cat is

density =  \frac{400}{125}  =  \frac{16}{5}  \\

We have the final answer as

<h3>3.2 g/L</h3>

Hope this helps you

3 0
3 years ago
Use the Henderson-Hasselbalch equation, eq. (3), to calculate the pH expected for a buffer solution prepared from this acid and
notka56 [123]

Answer:

pH=4.56

Explanation:

Hello there!

In this case, given the Henderson-Hasselbach equation, it is possible for us to compute the pH by firstly computing the concentration of the acid and the conjugate base; for this purpose we assume that the volume of the total solution is 0.025 L and the molar mass of the sodium base is 234 - 1 + 23 = 256 g/mol as one H is replaced by the Na:

n_{acid}=\frac{0.2g}{234g/mol}=0.000855mol\\\\n_{base}= \frac{0.2g}{256g/mol}=0.000781mol

And the concentrations are:

[acid]=0.000855mol/0.025L=0.0342M

[base]=0.000781mol/0.025L=0.0312M

Then, considering that the Ka of this acid is 2.5x10⁻⁵, we obtain for the pH:

pH=-log(2.5x10^{-5})+log(\frac{0.0312M}{0.0342M} )\\\\pH=4.60-0.04\\\\pH=4.56

Best regards!

6 0
2 years ago
Please help asap. will give brainliest to correct answer
Usimov [2.4K]
The answer is 232 plus 450
7 0
3 years ago
0.0075 mole of calcium trioxocarbonate(IV) is
KatRina [158]

Answer:

0.0075÷0.015=0.5 not so sure lol

4 0
3 years ago
Describe two ways in which sodium chloride is different from sodium​
KATRIN_1 [288]

Answer:

sodium chloride is a component is a salt made of a metal Sodium and a non chlorine is a alone only and element and very less stable until bonded with them metal like a n, a, k or H

7 0
3 years ago
Other questions:
  • Explain the action of steam on a metal​
    9·1 answer
  • Mirrror metal and wood are the exaple
    11·1 answer
  • An element belongs to group 17 of the periodic table. The element is most likely a
    8·1 answer
  • My topic is baseball heights.
    10·1 answer
  • Δs is negative for the reaction __________.
    6·1 answer
  • During the summer, after a big storm blows through, David notices leaks from his air conditioner. Which of the following is the
    10·2 answers
  • All of the following are true about science except (2 points)
    15·1 answer
  • Name:_____________________________________________________ Date:___________ Period:_________ 3/23 - 3/27 Assignment 1: Gas Law P
    9·1 answer
  • A sample of helium gas has a volume of 2.75 L at STP. How many grams of He are present?
    11·1 answer
  • During a reaction, the enthalpy of formation of an intermediate is 34 kJ/mol. During the reaction, 4 moles of the intermediate a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!