Use the formula: antilog (-pH) = antilog (-2.1)= 0.0079 M or 7.9 x 10 ^-3 M
(to get antilog hit 2nd button then log. Screen should have 10^(
The molarity of the sugar solution can be calculated using the formula: molarity = moles of solute / liters of solution. Plugging in the values, molarity = 21.0 moles / 52.0 L which equals 0.404 Molarity.
21 is the only solution of that equation.
The solution is k = 9.
25
Y=-6
7 and (-3/2)
If you mean 28 = 7+y then the solution of the equation is y = 21
x = 3, y = 3
The solution (not sum) to the equation 21 = 3c + 6 is as follows:21 = 3c + 621 - 6 = 3c + 6 - 615 = 3c3c = 153c/3 = 21/3c = 7
2x - y = 15 2x + 3y = -21 As you observe both equations (having different slopes), you see that the system is consistent, and it has only one solution.
Well, darling, a 2-step equation that equals 21 could be something like 2x + 5 = 21. First, you'd subtract 5 from both sides to get 2x = 16, then divide by 2 to find x = 8. Voila, you've got yourself a sassy solution!
28*21 equals 84