The compound HClO4, when placed in water, will dissociate into the ions, H+ and ClO4-. Therefore, the 2.0 M solution will also form 2.0 M H+. The pH is calculated through the equation,
pH = -log[H+]
Substituting,
pH = -log[2] = -0.3
Thus, the pH of the solution is -0.3.

5 0

3 years ago

Calculate the number of moles in 25.0 g of each of the

mamaluj [8]

Answer:

A. 6.25moles

B. 0.78moles

C. 0.32moles

D. 0.15moles

E. 0.43moles

Explanation:

use

n = mass/molar mass

A. He

25/4 = 6.25moles

B. O2

25/32 = 0.78moles

C. Al(OH)3

27+ 3(17) = 78
25/78 = 0.32 moles

D. GaS3

70+3(32) = 166
25/166 = 0.15moles

E. C4H10

4(12)+10(1) =58
25/58 = 0.43moles

5 0

3 years ago

Which of these mixtures will MOST LIKELY result in soil? A) sand, clay, and heat B) sand, clay, and water C) sand, clay, heat, a

Wewaii [24]

Answer:

I think it should be C.

Explanation:

Because for a plant to start photosinthesis it need sun (heat is like the sun),water,and stuff that soil is made of (sand and clay) tell me if this is correct

Thanks

5 0

3 years ago

Read 2 more answers

A chemical ____ is a process in which some substances change chemically into different substances

garik1379 [7]

Is reaction a choice?

6 0

1 year ago

Read 2 more answers