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
sergeinik [125]
3 years ago
8

Which of the following is not a common use of gypsum? a. wallboard/drywall for homes b. a primary ingredient for toothpaste c. s

urgical splints and casts d. pH reducing agent for acidic soils
Chemistry
1 answer:
Nataliya [291]3 years ago
3 0

Answer:

pH reducing agent for acidic soils

Explanation:

Gypsum is not used to reduce soil pH because it will displace the soil H+ but there's no means of extracting the H from the soil. So the pH of the soil remains the same.

You might be interested in
Why is there a vast amount of salt water on Earth?
Diano4ka-milaya [45]
Water is an excellent solvent, salt is carried by the water due to erosion and carried to the ocean.
3 0
3 years ago
In an experiment, zinc chlorate decomposed according to the following chemical equation.
mote1985 [20]

Answer : The correct expression is, (150 × 3 × 31.998) ÷ (232.29 × 1) grams

Explanation :

First we have to calculate the moles of Zn(ClO_3)_2

\text{ Moles of }Zn(ClO_3)_2=\frac{\text{ Mass of }Zn(ClO_3)_2}{\text{ Molar mass of }Zn(ClO_3)_2}=\frac{150g}{232.29g/mole}=\frac{150}{232.29}mole

Now we have to calculate the moles of O_2

The balanced chemical reaction is,

Zn(ClO_3)_2\rightarrow ZnCl_2+3O_2

From the balanced chemical reaction we conclude that,

As, 1 mole of Zn(ClO_3)_2 react to give 3 mole of O_2

So, \frac{150}{232.29} moles of Zn(ClO_3)_2 react to give \frac{150}{232.29}\times \frac{3}{1} moles of O_2

Now we have to calculate the mass of O_2

\text{ Mass of }O_2=\text{ Moles of }O_2\times \text{ Molar mass of }O_2

\text{ Mass of }O_2=(\frac{150}{232.29}\times \frac{3}{1})mole\times (31.998g/mole)=\frac{150\times 3\times 31.998}{232.29\times 1}g

Therefore, the correct expression for the mass of oxygen gas formed is, (150 × 3 × 31.998) ÷ (232.29 × 1) grams

6 0
3 years ago
Read 2 more answers
1) A sample of copper has a mass of 4.75 g and a volume
lianna [129]

Answer:

<h2>8.92 g/cm³</h2>

Explanation:

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

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

From the question

mass = 4.75 g

volume = 0.5325 cm³

We have

density =  \frac{4.75}{0.5325}  \\  = 8.920187

We have the final answer as

<h3>8.92 g/cm³</h3>

Hope this helps you

5 0
3 years ago
Compare Dalton’s and Democritus’ ideas.
Viefleur [7K]

Answer:

please give me brainlist and follow

Explanation:

The key difference between Democritus and Dalton atomic theory is that the Democritus atomic theory is an ancient theory that scientists later refined and elaborated whereas Dalton atomic theory is a comparatively modern, scientific theory that we cannot discard due its important statements.

7 0
2 years ago
What is a cause of cemical weathering? <br><br> A. sunlight<br> B. wind<br> C. gravity<br> D. acids
siniylev [52]
D. Acids I hope this helped ur welcome
4 0
3 years ago
Read 2 more answers
Other questions:
  • How many moles are in 2.0 grams of FeO
    14·2 answers
  • Which compound is an exception to the octet rule?
    10·2 answers
  • What is the name of the compound CrPO4 • 5H2O?
    5·1 answer
  • What happens when a substance undergoes a physical change?
    10·2 answers
  • Check all the examples below that represent a physical property of matter​
    12·2 answers
  • Solution of Na2SO4 is <br> A) acidic B) basic C neutral
    14·1 answer
  • How many grams of calcium are made up by 2.68 x 1023 atoms?
    5·1 answer
  • How will you prepare hydrogen from zinc and dilute acid.​
    8·1 answer
  • Which of these is an advantage of shade-grown coffee beans?
    8·1 answer
  • Hyy anyone free here ?( indian girls )​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!