Unit of M is also mole/L, where mole is the moles of solute and L is the volume of the solution. The latter is given: 158 mL or 0.158 L. So we need to find out the moles of NH4Br.
Moles of NH4Br = Mass of NH4Br/molar mass of NH4Br = 17.0g/(14+1*4+79.9)g/mol = 0.1736 mole.
So, the molarity of the solution = 0.1736mole/0.158L = 1.10 mole/L = 1.10 M
Answer:
D
Explanation:
Transport proteins carry substances throughout your bloodstream — into cells, out of cells or within cells. The substances transported by these proteins include nutrients like vitamins or minerals, blood sugar, cholesterol and oxygen.
Explanation:
Density = 1.60 g/mL
Initial Temperature T1 = 218.0°C + 273 = 491 K (Upon converting to kelvin temperature)
Final Temperature T2 = 750.0°C + 273 = 1023 K (Upon converting to kelvin temperature)
Mass of gas = 1.00 lb = 453.592 g (Upon converting to g)
Final Volume V2 = ?
Initial volume can be obtained from;
Density = Mass / Volume
Volume = Mass / Density
Volume = 453.592 / 1.60 = 283.495 ml
Initial Volume V1 = 283.495 ml
Using charles law;
V1 / T1 = V2 / T2
V2 = V1 * T2 / T1
V2 = 283.495 * 1023 / 491
V2 = 590.66 ml
Answer:
False
Explanation:
When weak bases dissociate, an equilibrium is established rather than dissociating 100%. So OH- and metal ions are partially ionized.
