# Posts by Janessa

Total # Posts: 16

**chemistry **

when 1.00kg of copper reacts, 3.12kg of silver is recovered. what is the percentage yield?

**science **

How many moles of carbon monoxide are needed to react completely with 108 kg of Fe2O3. Fe2O3(s)+CO(g)?Fe(s)+CO2(g)

**Geometry**

A flagpole is 45 feet away from the school building. A 6-foot tall student stands 15 feet away from the building. What is the height of the flagpole?

**Math**

It's D! $22.50 is your answer:)

**Pre-Algebra**

:( ANSWER PLEASE ANSWER PLEASE

**Pre-Algebra**

1. What data are represented by the stem-and-leaf plot below? 3 | 7 8 9 4 | 1 3 7 5 | 2 4 Key: 4 | 1 means 41 a. 37, 38, 39, 41, 43, 47, 52, 54 b. 73, 83, 93, 14, 34, 74, 25, 45 c. 7, 8, 9, 1, 3, 7, 2, 4 d. 37, 38, 39, 14, 34, 74, 25, 45 2. Find the mode and the median of the ...

**Pre-Algebra**

YES SO THE ANSWER IS 30

**Pre-Algebra**

Find the mean of the following data set: 25, 30, 20, 20, 25, 35, 35, 10 a. 15 b. 20 c. 25 d. 30 My Answer: b. 20

**Spanish**

Que te gusta hacer? Means What do you like to do? And the right answer would be D. Me gusta montar en mobopatin. (Means I like to skateboard)

**Social Studies**

Sorry It would never happen sorry :( !!!!!!

**Social Studies**

I post a question and nobody is answering! :(

**Social Studies**

Can anybody please help me ? =( !

**Chemistry**

By titration it is found that 69.9 mL of 0.151 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution.

**math**

Harold says" to find 6x8 , i can use the facts for 5x4and 1x4." do you agree? explain.

**Math**

Hi! I am just starting algebra in my class, and I do not get it. If s=10, then 5s=?

**4th grade english**

miicastn unscramble this work

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