How many grams of CuSO4 must be dissolved in 100 mL of total solution to create a 0.25 M solution of CuSO4?

A) 4 g

B) 25 g

C) 40 g

D) 159 g

A) 4 g

Explanation:

Data:

V  =100 mL = 0.1 L

M  = 0.25M

g = ?

Molarity

The moles are cleared from this equation:

Through the molecular weight, the grams of CuSO4 are calculated, knowing that the molecular weight of CuSO4 is 160 g/mol.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.