# Posts by Malinda

Total # Posts: 18

**chemistry**

Calculate the standard enthalpy change for the reaction OF2 (g) + H2O (l) ? O2 (g) + 2HF (g). Standard enthalpies of OF2, H2O, and HF are 20 kJ mol-1, -285 kJ mol-1, and -270 kJ mol-1 respectively.

**Math**

Thank you

**Math**

Good morning, can someone please give me simple easy steps to solve Quadratic Equations. Thank you

**Math**

I have trouble solving distance rate problems. I have a worksheet that I want to complete. I will post one question in hopes that someone can break it down so I am able to solve other distance rate problems. (Step by Step please.) Thank you. An aircraft carrier made a trip to ...

**Math**

Sorry I didn't type the question correctly. Ricky drove from town A to town B in 3 hours. His return trip from town B to town A took 5 hours because he drove 15 miles per hour slower on the return trip. How fast did Ricky drive on the trip from town A to town B?

**Math**

Ricky drove from town A to town B in 3 hours because he drove 15 miles per hour slower on the return trip. How fast did Ricky drive on the trip from town A to town B? I know the answer is 37.5mph but can you please explain it and break it down so that I am able to work similar...

**Math**

Which is greater? - -- 2.396 _____ 2.3965 Can you also explain to me how I can compare to tell which one is larger. Thank you

**Math (2 Part Question)**

(Part 1) A local parking garage cost $12.00 a day, but if purchase a pass that costs $25.00 a month, the rate drops to $8 dollars a day. After how many days would it be more cost effective to buy the pass? You are saving $4 dollars a day buying the pass. The pass costs $25.00...

**Math**

Hi, I am still confused because if the total area is 450 square feet and 1 can of paint covers 250 square ft. the answer is 4 gallons I know that much but the problem and math does not show that. Can you please explain. Thank you

**Math**

A swimming pool is 15 by 30 feet and a consistent 5 feet deep. You are painting the walls and floor of the pool. If a gallon can of paint covers 250 square feet, how many gallon cans would you need to buy?

**Math**

Pencils sell for 98 cents per dozen. How much more per pencil does it cost to buy 5 for 50 cents?

**English**

Unscramble letters to make seven letter words

**Geometry**

Which two dimensional shape can be rotated to create this solid subject?

**Math**

24

**drivers ed**

How you renew your permit in state of illinois?

**Math Grade 3**

81

**Physics**

A square of side 2L is removed from one corner of a square sandwich that has sides of length L. The center of mass of the remainder of the sandwich moves from C to C’. The displacement of the x coordinate of the center of mass (from C to C’) is? In the picture, C'...

**physics**

A square of side 2L is removed from one corner of a square sandwich that has sides of length L. The center of mass of the remainder of the sandwich moves from C to C’. The displacement of the x coordinate of the center of mass (from C to C’) is? In the picture, C'...