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
Cloud [144]
3 years ago
7

Convert the following to Celsius

Chemistry
1 answer:
Naya [18.7K]3 years ago
8 0

9. (80-32)5/9

48×5/9

240/9

26.66°C

9. (90-32)5/9

58×5/9

32.22°C

10 (212-32)5/9

180×5/9

20×5

100°C

You might be interested in
HELP! 10 pts!! || Which does NOT describe a water molecule?
AVprozaik [17]

Answer:

C.)

Explanation:

Hope this helps:)

5 0
3 years ago
What is the molarity of a NaOH solution if 28.2 mL of a 0.355 M H2SO4 solution is required to neutralize a 25.0-mL sample of the
Verdich [7]

Answer:

[NaOH} = 0.4 M

Explanation:

In a reaction of neutralization, we determine the equivalence point of the titration. In this case, we have a strong base and a strong acid.

(H₂SO₄, is considered strong, but the first deprotonation is weak)

2NaOH  +  H₂SO₄  →  Na₂SO₄  + 2H₂O

As we have 2 protons in the acid, we need 2 OH⁻ from the base to form 2 molecules of water.

In the equivalence point we know mmoles of base = mmoles of acid

Let's finish the excersise with the formula

25 mL . M NaOH = 28.2 mL  .  0.355M

M NaOH = (28.2 mL  .  0.355M) / 25 mL → 0.400

8 0
3 years ago
A certain protein was found to contain 0.292% manganese by mass. Determine the minimum molecular mass of the protein.
Lisa [10]
55u \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 0,292\%\\
x \ \ \ \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 100\%\\\\
x = \frac{55u*100\%}{0,292\%}\approx18835,62u
4 0
3 years ago
What is of or from outside of the earth
WINSTONCH [101]

Answer The outer layer of the Earth is called the crust.

Explanation: Because it's in the earth atmosphere

4 0
3 years ago
TIMED PLS HELP AND WILL GIVE BRAINLIST
Strike441 [17]

Answer:

19.4 g of alum, will be its theoretical yield

Explanation:

The reaction is:

2 Al + 2 KOH + 4 H₂SO₄ + 22H₂O → 3H₂ + 2KAl(SO₄)₂•12H₂O

Let's determine the amount of acid.

M are the moles contained in 1 L of solution or it can be mmoles that are contained in 1 mL of solution

M = mmol /mL

M . mL = mmol

We replace: 8.3 mL . 9.9 M = 82.17 mmoles

We convert to moles: 82.17 mmol . 1 mol / 1000mmol = 0.082 moles

Ratio is 4:2

4 moles of sulfuric acid can make 2 moles of alum

By the way, 0.082 moles of acid may produce ( 0.082 . 2) /4 = 0.041085 moles.

We convert moles to mass:

Molar mass of alum is: 473.52 g/mol.

0.041085 moles . 473.52 g/mol = 19.4 g

6 0
2 years ago
Other questions:
  • What would dissolve the best in water a) HCI b)C6H12 C) CCI4 d) Oil
    11·1 answer
  • _AI + _HCI —> _H2 + _AlCl3
    8·1 answer
  • There are exaclty 640 acres in one square mile. How many square meters are in 2.2 acres?
    8·1 answer
  • I need lots of help owo
    10·2 answers
  • How many neutrons does 3919K have?
    10·1 answer
  • What are the two factors that affect ionic bond formation? Additionally, can you describe the trends of one of these factors in
    6·1 answer
  • Two soccer teams, the Bears and the Panthers, played games at the same time in two different locations. The Bears game was playe
    7·1 answer
  • 50 points in total i believe!<br> Why does chocolate melt when it gets warm?
    12·1 answer
  • Which has a lower electronegativity: sodium or rubidium?
    11·1 answer
  • A buffer is prepared by mixing 50.3 mL of 0.183 M NaOH with 128.8 mL of 0.231 M acetic acid. What is the pH of this buffer
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!