# Posts by Shelbie

Total # Posts: 13

**Precal**

How do i find the exact value for: (cos5pi/16)(cospi/16)+ (sin5pi/16)(sinpi/16)

**chemistry**

A sample of gas at 300 K has a volume of 2.0 liters. At what temperature will the volume decrease to 1.0 liter if the pressure is kept constant?

**science help!!!**

Thanks Josslyn

**Chemistry PLEASE HELP:(**

I really need someone to explain this stoichiometry problem. Directions: Outline how to determine the limiting agent. Determine the excess reactant and how much is left over. Determine the amount of each of the products produced. CaSO4 + AuF3 = CaF2 + Au2(SO4)3 Start with 15 ...

**Someone PLEASE HELP! (Chemistry)**

Use the following problem to: Outline how to determine the limiting agent. Determine the excess reactant and how much is left over. Determine the amount of each of the products produced. CaSO4 + AuF3 = CaF2 + Au2(SO4)3 Start with 15 grams of each reactant.

**Math**

Solve each inequality by using algebra. 8. x 2 + 10x + 1 ≥ 12 9. x 2 + 13x + 45 < 5 10. -2x 2 + 3x + 12 > 10 11. Business A consultant advises the owners of a beauty salon that their profit p each month can be modeled by p(x) = -50x 2 + 3500x - 2500, where x is the...

**chemistry**

Suppose that you have an unlimited supply of copper 2 chloride to react with iron. How many moles if copper would be produced by 34.0 grams of iron with the copper 2 chloride solution

**chemistry**

Suppose that you have an unlimited supply of copper 2 chloride to react with iron. How many moles if copper would be produced by 34.0 grams of iron with the copper 2 chloride solution

**math**

the problem is -9x+1=-80. At the end I cant figure out if it is a negative or positive?

**Pre-Algebra**

-My tens and units digits are consecutive integers whose product is 2/3 of my hundreds digit. -My units digit is 1/3 of my hundreds digit. -The sum of my digits id equal to the sum of the first five counting numbers. What year am I?

**science**

What is something in an experiment thst can change?

**math**

what does trigonometry mean?

**English**

yea go ahead, but i will prolly like it... im tellin you now!

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