Saturday

April 19, 2014

April 19, 2014

Total # Posts: 20

**MATH**

a purse contains $1.35 in quarters nickels and dimes There are 3 times as many dimes as quarters and 3 more nickels than quarters. find the number of each coin

**physical science**

A birthday candle 4 cm high is 10 cm from a converging lens whose focal length is 15 cm. Use a ray diagram on a suitable scale to find the location of the image, its height, and whether it is erect or inverted, real or virtual.

**Sciece**

The primary of a step-down transformer connected to a 240 V source has 1000 turns. The secondary has 100 turns. What is the output voltage of this transformer?

**Math**

Alex works 4 hours on tuesday,thursday ,and Friday.He earns $6.50 per hour.He is saving to buy a television that costs $525.How many weeks will Alex have to work to buy the television?

**Math**

Alex works 4 hours on tuesday,thursday ,and Friday.He earns $6.50 per hour.He is saving to buy a television that costs $525.How many weeks will Alex have to work to buy the television?

**science**

what causes grains of sand to stick together

**chemistry**

For the system CaO(s) + CO2(g) = CaCO3(s), I added 1.00 mol of CaO(s) to 1.00L of 0.500M CO2(g) at 200 oC. At equilibrium the [CO2] = 0.150M. What is the value of Kp for this reaction?

**chemistry**

A study of the system, H2(g) + I2(g) == 2 HI(g), was carried out. Kc = 54.9 at 699.0 K (Kelvin) for this reaction. A system was charged with 2.50 moles of HI in a 5.00 liter vessel as the only component initially. The system was brought up to 699.0 K and allowed to reach equil...

**chemistry**

An electric range burner weighing 614 grams is turned off after reaching a temperature of 499.0oC, and is allowed to cool down to 22.2oC. Calculate the specific heat of the burner if all the heat evolved from the burner is used to heat 565 grams of water from 22.2oC to 80.9oC.

**math**

It would equal 4/14 because 211/14 equals 1/14

**Math**

gbdhsegbfhrjejfbvgtyuwbrfthvbhyur

**math**

sandra wrote the sequence below 2,5,10,17,... which equation represents the rule for finding the nth term of this equation

**Math**

Two rectangles have an area of 81 square inches. Name two possible perimeters for the rectangles

**3rd grade math**

what about 160

**chemistry**

How many joules of heat would be required to completely melt 5.00 grams of H2O (s) at 0C to H20 (l) at 0C

**science**

which bread will mold the fastest? is it wheat bread or white bread

**math**

how do i solve this problem? find an equation for a line that is tangent to the graph of y=e^x and goes through the origin.

**Math**

OK, I have had trouble with math, 'C' average, and we are learning proportions. I don't get them! Can someone please do a proportion and then tell the steps to do it? Ex. 4/6= 8/X. Steps: 4/6 equals 8 over x. You do _______ do get ________ over , so X=12. [I know t...

**Ordering decimals**

need help

**how far is the star el nath from the sun**

HOW FAR IS THE STAR EL NATH FROM EARTH PLEASE

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