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
charle [14.2K]
3 years ago
13

Molecular mass of potassium hydrogen carbonate (KHCO3)

Chemistry
1 answer:
adelina 88 [10]3 years ago
7 0

Answer:

100gmol⁻¹

Explanation:

Problem: To calculate the molecular mass of

KHCO₃

Solution

The molar mass of a substance is defined as the number of grams per mole of that substance.

To determine the molar mass of this compound we find:

> the component atomic masses

>we express it in gmol⁻¹

From the periodic table, the atomic masses of the elements in the given compound are:

K = 39g

H = 1g

C = 12g

O = 16g

Now let's add these numbers together:

KHCO₃ = [39 + 1 + 12 + (16x3)]

= 39 +13 +48

= 100g

Molar mass of KHCO₃ = 100gmol⁻¹

You might be interested in
Write a note on Polygenic disorder.​
Lorico [155]

Answer:

a note? well alright

Explanation:

<em><u>Polygenic disease:</u></em>  (the defintion)

A genetic disorder that is caused by the combined action of more than one gene.

<u>Polygenic conditions</u><u>:</u> hypertension, coronary heart disease, and diabetes.

This is so because such disorders depend on the simultaneous presence of several genes, they are not inherited as simply as are single-gene diseases.

8 0
3 years ago
Things people think bad about them self
Bumek [7]

1 2 3 4 5 and how the question ask

6 0
3 years ago
Good morning, I have a question..
matrenka [14]

Answer:

<h3>The answer is 5.24 mL</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

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

From the question

mass = 152 g

density = 29 g/cm³

We have

volume =  \frac{152}{29}  \\  = 5.24137931...

We have the final answer as

<h3>5.24 mL</h3>

Hope this helps you

7 0
3 years ago
what do Mars, Mercury, and Venus have in common? A. They have a gas surface composition and a thick atmosphere. b They have many
mario62 [17]

Answer:

the best guess would have to be C

3 0
3 years ago
Calculate the energy required to heat 406.0mg of cyclohexane from 33.5°C to 38.9°C . Assume the specific heat capacity of cycloh
N76 [4]

Answer:

Q = 4.056 J

Explanation:

  • Q = m<em>C</em>ΔT

∴ m = 406.0 mg = 0.406 g

∴ <em>C </em>= 1.85 J/g.K

∴ T1 = 33.5°C ≅ 306.5 K

∴ T2 = 38.9°C = 311.9 K

⇒ ΔT = 311.9 - 306.5 = 5.4 K

⇒ Q = (0.406 g)(1.85 J/gK)(5.4 K)

⇒ Q = 4.056 J

6 0
3 years ago
Other questions:
  • We can change a gas to liquid by _____ the temperature and ______ the pressure.
    9·1 answer
  • N2+3h2=2nh3 how many grams of hydrogen must react if the reaction producesd 27 grams of nh3
    11·1 answer
  • We call the elements in the blocks of periods 4-7 and groups 3-12 the
    13·1 answer
  • Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide. 4 HCl ( aq ) + MnO
    13·1 answer
  • A triangular-shaped, transparent solid is known as a ______<br><br> A. Cylinder <br> B. Prism
    11·2 answers
  • a sample of sucrose was burned in a calorimeter, and 41,600 joules oh heat energy were released. which statement is true about t
    6·1 answer
  • What is true about warm, saturated air?
    15·1 answer
  • Please answer this question for me I will answer your questions too I promise!!
    5·2 answers
  • What is mass times acceleration equal to?
    5·2 answers
  • how do the parts of the liverworts above the soil get the minerals from the soil that are needed for plant processes
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!