Ask a New Question
Search
Questions and answers by
AlphaPrimes
Questions (9)
Simplify (1+tanx)^2
The answer is (1-sinx)(1+sinx) Here's what I do: 1 + 2tanx + tan^2x When I simplify it becomes 1 +
1 answer
636 views
1. A lab tech needs 1.00 L of 0.125 mol/L sulfuric acid solution for a quantitative analysis experiment. A commercial 5.00 mol/L
2 answers
1,412 views
Bob got the following marks in each category for his math test.
Knowledge: 15/15 Application 8/9 Thinking 5/7 Communication 3.5/4
1 answer
435 views
85.0 mL of 1.50 mol/L ammonium chloride solution is added to 250 mL of water. Calculate the molar concentration of the final
3 answers
722 views
A student needs 0.14 mol of sodium sulphate to do an analysis. the concentration of the available solution is 2.6 m/L. What
1 answer
484 views
Triangle HAV has <H = 124, a=8.5mm, and h=7.2mm
How many solutions are there? What I attempted: SinH/h=SinA/a Sin124/7.2=SinA/8.5
2 answers
625 views
forty 2.0 kg blocks 20.0 cm thick are used to make a retaining wall in a backyard. Each row of the wall will contain 10 blocks.
1 answer
3,872 views
Gold-198 with a half life of 2.6 days is used to diagnose and treat liver disease. Write a half life decay equation that relates
1 answer
4,230 views
If you have 14.2 mol of C4H10 and 85.6 mol of O2, which is the limiting reagent?
I calculated mass using m=N*M, giving me the
1 answer
466 views
Answers (7)
This is just a right triangle... Use SOHCAHTOA to solve for each side and you can find the perimeter... Area of a triangle =b*h/2
Calculate the mass of solid cobalt(II) chloride hexahydrate you need to prepare 100.0 mL of a 0.100 mol/L cobalt(II) chloride solution.
Figured it out.
Think of it like this... You have 480 students To calculate 3/4 of the population(75%), you do: (0.75)(480) which equals 360 students. Now, we take that number and multiply it by (1/5) That will give you the answer.
Follow Bedmas to solve this question Brackets Exponents Division Multiplication Addition Subtraction 78 / 9 x 3 + (6 - 9) 78 / 9 x 3 + (-3) 8.6 x 3 + (-3) =23
Oh, that makes sense. Thanks!
Nevermind, I figured out what I did wrong.
