3 years ago

Is copper sulphate dissolving in water a chemical change or physical change and why?

1 answer:

8 0

Because copper sulphate is not an ionic substance, no bonds are changed when it is dissolved. Thus it has to be a physical change

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Is always

Studentka2010 [4]

Answer:

o atom, smaller, anion is the right answer of the following

7 0

3 years ago

What is the molarity of a solution that contains 3.66 mol KCl in 7.98 L solution?

QveST [7]

Answer:

.4586M

Explanation:

It's simple, just devide the mol value by the volume value. So 3.66mol/7.98L=.4586M

4 0

3 years ago

A balloon inflated in a room at 300 ºC has a volume of 7.0 L. The balloon is then cooled to a temperature of 25.0 ºC. What is th

QveST [7]

Answer:

$\huge\boxed{\sf V_2 =3.64 \ L}$

Explanation:

Given Data:

Initial Volume = $V_{1}$ = 7.0 L

Initial Temperature = $T_{2}$ = 300 °C + 273 = 573 K

Final Temperature = $T_{2}$ = 25.0 °C + 273 = 298 K

Required:

Final Volume = $V_{2}$ = ?

Formula:

$\displaystyle \frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}$ [Charles Law]

Solution:

Put the givens

$\displaystyle \frac{7}{573 } =\frac{V_2}{298} \\\\0.01 = \frac{V_2}{298} \\\\\times 298 \ to \ both \ sides\\\\0.01 \times 298 = V_2\\\\3.64 \ L =V_2\\\\\boxed{V_2 =3.64 \ L}\\\\\rule[225]{225}{2}$

8 0

2 years ago

Why does a solid have an definite shape?

Leno4ka [110]

Because the particle in the solid shape is pack and closely .

4 0

4 years ago

Enter the correct 4 digit code (no spaces) *

Tamiku [17]

Explanation:

a=5

b=9

c=3

d=4

that's the correct brainliest answer

3+2=5

+ + +

1 +3 =4

= = =

4+5=9

4 0

3 years ago