A student makes 0.500 L of a 2.00 M solution of ammonium chloride
(NH4Cl). How many moles of NH4Cl are contained in the solution? Your
answer should be to the nearest tenth.

There is 1 mol of  NH4Cl

Explanation:

Molarity is a concentration measure that expresses the moles of solute (in this case NH4Cl) per liter of solution. In this case we calculate the moles contained in 0.5 L of solution by performing a simple rule of three:

We have a solution 2,0M --> We hace 2 moles of solute in 1 Liter of solution.

1 L solution2 moles of NH4Cl

0,5 L solutionx= (0,5 L solutionx 2 moles of NH4Cl)/ 1 L solution

x= 1 moles of NH4Cl

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!