A- 5000 decilitres
B- 42000
Answer:
0.045 M
Explanation:
Given data:
Mass of NaHSO₄ = 12 g
Volume of solution = 2.00 L
Molarity of solution = ?
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
Number of moles = 12 g/ 120.06 g/mol
Number of moles = 0.09 mol
Molarity:
Molarity = 0.09 mol / 2.00L
Molarity = 0.045 mol/L
M = mol/L
Molarity = 0.045 M
Answer:
Yes a chemical reaction is taking place.
Explanation:
There is a change in temperature along with bubbling. All signs of a chemical reaction.
Answer:
Smartphones are made up of around 30 elements, including copper, gold and silver for wiring and lithium and cobalt in the battery. The bright colours of the display are produced by small amounts of rare earth elements, including yttrium, terbium and dysprosium.
Explanation:
The intensity<span> of the light has no connection with the photoelectric effect.</span>
<span>That's what was so baffling about it before the particle nature of light </span>
<span>was suspected ... a match with a blue flame might stimulate the </span>
<span>photoelectric effect, but a high-power red searchlight couldn't do it.</span>
