05/18/17

If I let someone borrow $28 and they pay me $20 then borrow that $20 back. How much do they owe me?

Borrowed $28 paid me $20 then borrowed that $20 back. How much do they owe me 

05/18/17

Oxygen reacts with 22g of C5H10 producing CO2 and water. What will the volume of CO2 produced at STP?

Oxygen reacts with 22g of C5H10 producing CO2 and water. What will the volume of CO2 produced at STP?

05/18/17

Y-7=2(x-10)

What is the slope 

05/17/17

Percent composition

what is the percent composition of each element in the compound Na2SO4

05/17/17

How many grams

How many grams of Na2SO4 are needed to prepare 0.825 L of a 0.450 M solution?

How many atoms

How many atoms are present in 406.4 g of lead (Pb)?

i need some help working out this chemistry problem.

1. One cup of kidney beans contains 15 g of protein, 1.0 g of fat, and 42 g of carbohydrate. How many kilocalories, to two significant figures, does this sample contain?

05/16/17

A. What percent of 90 is 3? B. 5% of what number is 10?

A. What percent of 90 is 3?   B. 5% of what number is 10?

Ratio, Proportions, Percentages

How do I solve these questions?    How much is: a) 23 increased by 34% b) 28 less 65%   

05/16/17

Word problem

If im standing somewhere looking at my gps and a store i like is 6 mi away and another one 8 mi away, how far are they from each other

05/16/17

lay a concrete slab in a room 42.35m2 and 300mm thick if 1m3 is $60 how much concrete do u need and how much will it cost

could someone please answer this question as soon as possible I have been stuck on this question for about 3 days now thank you

An alpha level of 0.05 means what? What about an alpha level of 0.01, 0.001, 0.10, and 0.20?

An alpha level of 0.05 means what?  What about an alpha level of 0.01, 0.001, 0.10, and 0.20?

05/16/17

A chef’s favourite cake recipe uses 8 eggs and 500 g of flour. If he scales the recipe up to use a dozen eggs, how many grams of flour should he use?

please help as i need to do this for homework because i find it very confusing. thank yo to anyone who helps

05/13/17

how many molecules of water will be produced if 13.15g of pentane are burned

this for chemistry 

Is the plasma membrane semi permeable or selective permeable?

Can it be both? I've tried searching it up but keep seeing different answers? Also is the plasma separate from the phospholipid bilayer? I would really appreciate it if someone can answer this... more

how many milliliters of 0.12m NaOH are needed to completely neutralized 2.00 mL of 0.18M H2S04?

how many milliliters of 0.12m NaOH are needed to completely neutralized 2.00 mL of 0.18M H2S04?

05/12/17

20.0 ml solution was added to 1.000L of dextrose solution what's the appropriate volume of this IV bag in liters?

Please provide a detailed explanation I divided 20 by 1000 and got 0.02 my professor got 0.0200L where did the last two zeros come from from his part? then he added 0.200 to 1.000L please explain

05/12/17

convert 8.49kg to micrograms? convert 318us to milliseconds? convert 93km to nanometers? convert 37.1 mm to centimeters?

please provide a detailed explanation of each conversion

05/12/17

List 3 numbers <200 but >100 divisible by 3

List 3 numbers <200 but >100 divisible by 3

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