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
vova2212 [387]
2 years ago
5

The temperature 30k expressed in degrees celsius is ?

Chemistry
1 answer:
prohojiy [21]2 years ago
5 0
That is -273 + 30 = -243 degrees celsius
You might be interested in
Which one of these three elements conatain the most protons
padilas [110]

Answer:

i think it's B sorry if i'm wrong

4 0
2 years ago
Read 2 more answers
Kingdom animalia includes a major phylum known as chordata, which includes the sub-phylum vertebrata. This includes lions like t
Paul [167]

Felidae is B) Family

3 0
2 years ago
How many grams of sodium acetate ( molar mass = 83.06 g/mol ) must be added to 1.00 Liter of a 0.200 M acetic acid solution to m
Pie

<u>Answer:</u> The mass of sodium acetate that must be added is 30.23 grams

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

Molarity of acetic acid solution = 0.200 M

Volume of solution = 1 L

Putting values in above equation, we get:

0.200M=\frac{\text{Moles of acetic acid}}{1L}\\\\\text{Moles of acetic acid}=(0.200mol/L\times 1L)=0.200mol

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

pH=pK_a+\log(\frac{[\text{salt}]}{[\text{acid}]})  

pH=pK_a+\log(\frac{[CH_3COONa]}{[CH_3COOH]})

We are given:

pK_a = negative logarithm of acid dissociation constant of acetic acid = 4.74

[CH_3COONa]=?mol  

[CH_3COOH]=0.200mol

pH = 5.00

Putting values in above equation, we get:

5=4.74+\log(\frac{[CH_3COONa]}{0.200})

[CH_3COONa]=0.364mol

To calculate the mass of sodium acetate for given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Molar mass of sodium acetate = 83.06 g/mol

Moles of sodium acetate = 0.364 moles

Putting values in above equation, we get:

0.364mol=\frac{\text{Mass of sodium acetate}}{83.06g/mol}\\\\\text{Mass of sodium acetate}=(0.364mol\times 83.06g/mol)=30.23g

Hence, the mass of sodium acetate that must be added is 30.23 grams

7 0
3 years ago
I need y’all’s help please
nikitadnepr [17]

Answer:

6 mass

Explanation:

because the si unit of gram is mass

7 0
2 years ago
WILL MARK BRAINLIEST!
jarptica [38.1K]

An atomic mass unit is defined as precisely 1/12 the mass of an atom of carbon-12.

7 0
3 years ago
Other questions:
  • The j shaped organ is full of hydrochloric acid
    5·1 answer
  • What are the correct answers to these questions?
    15·1 answer
  • I NEED HELP!!!!!!!!!!!!!!!!
    5·1 answer
  • Hydrogen is an ion.<br>Is Hydrogen gas (H2) an ion? ​
    10·1 answer
  • when you drop a block of metal into water, you find that the metal sinks. what happens if you drop a smaller block of the same m
    14·2 answers
  • How many grams of NaCl are contained in 0.50 L of a 4.20 M solution?
    7·1 answer
  • Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. How many grams of hydrogen are needed to react completely
    12·1 answer
  • How many moles of ethane gas, C2H6(g), will occupy 15.0 L at 30 degrees Celsius and 5.0 atm?
    10·1 answer
  • A radioactive nucleus can change from one element to another. How does this happen?
    15·1 answer
  • Explain how the solubility of water is useful in maintaining various life processes.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!