# Posts by rebekah

Total # Posts: 478

**Any suggestions for easy french dessert?**

Thanks!

**Any suggestions for easy french dessert?**

ok so for my school we have this thing called OCMC (One Community Many Cultures) and I have to make a poster and then for extra credit I can make a french food. I wanted to make a french dessert (Something that doesnt have to be hot or cold and can sit in room temp for 2 hours...

**chemistry**

Write electron configurations for the following ions, and determine which have noble-gas configurations. (Type your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.) Ru2+ thanks

**Chemistry**

A student mixes 100.0 mL of 0.300 mol/L silver nitrate solution with 100.0 mL of 0.300 mol/L calcium chloride solution. a) Determine the theoretical yield of the precipitate. b) If the actual mass of precipitate is 4.00g, calculate the percent error of this experiment.

**Chemistry**

this is what i have so far: 2AgNO3 + CaCl2 ---> 2AgCl + Ca(NO3)2 for AgNO3: V= 0.100L c=0.0300 mol/L n=cV = 0.03 mol for CaCl2: V= 0.100L c=0.0300 mol/L n=cV = 0.03 mol and now I don't know how to determine the limiting reactant.

**Chemistry**

A student mixes 100.0 mL of 0.300 mol/L silver nitrate solution with 100.0 mL of 0.300 mol/L calcium chloride solution. a) Determine the theoretical yield of the precipitate. b) If the actual mass of precipitate is 4.00g, calculate the percent error of this experiment.

**chem**

What is the frequency of radiation whose wavelength is 19.80 ? thanks:)

**chem**

Calculate the number of grams of magnesium nitride necessary to produce 2.02 L of ammonia gas at STP. I got 4.55g for the upper question which is correct but idk how to do the bottom one: How many moles of magnesium hydroxide can also be formed? Mg3N2(s) + 6 H2O(l)--> 3 Mg(...

**chemistry**

classify in as many ways possible 2 Rb(s) + Br2(g) --> 2 RbBr(s) acid-base double-displacement gas evolution oxidation-reduction precipitation single-displacement synthesis thanks

**chemistry**

what is the cation and anion of Na3PO4? thanks

**chem**

for the 3CH4. why is it $ and does C have to go before H??

**chem**

I still don't get it, can u explain???

**chem**

Complete and balance each of the following equations. If no reaction occurs, please enter NR in each answer box. (Type your answer using the format CO2 for CO2. Do not leave any box blank. Use the lowest possible coefficients.) ____Al4C3(s) + ___H2O ___Al(OH)3 + ___ _____ ...

**chemistry**

so they don't have to have equal charge?

**chemistry**

what is the cation and anion of Na3PO4? thanks

**7th grade Math**

Find the next three numbers in this sequence and explain the reasoning; 2/3, 2/5, 6/25, 18/125,...

**french**

oops sorry i didn't see abby had already posted ^^

**french**

im pretty sure since monica is a girl it should be intelligente. but other than that i think it is good.

**chem**

Give the general formula for any dialkene; that is, a straight-chain hydrocarbon with two double bonds along the chain. (Type your answer using the format CnHn+1 for CnHn+1.)

**chem-repost**

but. i can tell its wrong because of what i stated: "i tried the answer in my online hw and it said it was wrong. i am looking in my text book and CnH2n-2. the answer you guys are saying is the formula for alkynes. but i need to find the formula for dialkene. the formula ...

**chem-repost**

I ddin't know if anybody would look far down to page to help me answer my question but this is what was said so far. Posted by rebekah on Sunday, October 24, 2010 at 4:48pm. Give the general formula for any dialkene; that is, a straight-chain hydrocarbon with two double ...

**Science**

If you heat an iron bar until it glows red hot. the chemical composition is still the same but the silver iron bar changed to a red color hope that helps:)

**chem**

i tried the answer in my online hw and it said it was wrong. i am looking in my text book and CnH2n-2. the answer you guys are saying is the formula for alkynes. but i need to find the formula for dialkene. the formula for just alkene is CnH2n. but i don't know how to make...

**chem**

oh. that wasn't the correct answer

**chem**

Give the general formula for any dialkene; that is, a straight-chain hydrocarbon with two double bonds along the chain. (Type your answer using the format CnHn+1 for CnHn+1.) I know just alkene would be CnH2n but im not sure how to make it with the dialkene. can any1 help me? ...

**chem**

oh oops the lines on the picture moved all to the right. idk how to get them to stay.... but the top row should be above the 4th set of CH's from the left and the bottom set should be below the second from the right

**chem**

What are the IUPAC names of the following alkane. CH3CHCH3 I CH3CH2CH2CHCH2CHCH3 I CH3 i thought it was 2-methyl-4-propylheptane but aparently that is wrong. does anyone know the answer?

**math**

Given: segment AC and segment BD bisect each other at E prove: E is the midpoint of segment RS i don't know if you will be able to visualize the picture but just incase someone is i really need help on the proof for this one. Picture: two(supposedly congruent)triangles ...

**French III**

I think I got it but why do you say I got my hair cut. Je me suis fait couper Les cheveux? Why do you use me suis?

**French III**

Can someone please explain to me the difference between the futur and the futur causitive(sp?)

**Chem**

Oops I just need c

**Chem**

(b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109? % (c) If the mass of Ag-107 is 106.905, what is the mass of Ag-109? amu I really need help. Can u say the answer then explain how you got it? Thanks:)

**Chem**

Oh yah ok thanks:)

**Chem**

(b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109? Thanks

**Chem**

so how would u do it when an element gains. like Cl?

**Chem**

Yah I don't think we have gotten to the second part but the first makes sense. Thanks:)

**Chem**

thanks. can u explain that? and how did u know the stuff? like i am confused

**Chem**

Predict how many electrons will most likely be gained or lost by each of the following elements. Al I know it loses but how many?

**chem**

One could easily determine a single bb's mass by simply weighing it or by weighing 100 BBs and dividing the mass by 100. Why couldn't Robert Millikan use this procedure to measure the charge of an electron? Thanks:)

**chemistry**

When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 12.0 fluid ounce drink from 75°F to 35°F, if the heat capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.) please explain realy realy well ...

**chem.**

i have another question: A 43 kg sample of water absorbs 343 kJ of heat. If the water was initially at 22.1°C, what is its final temperature? I got 1.9 but i think i didn't do it correctly

**chem.**

thanks!

**chem.**

Calculate the amount of heat required to raise the temperature of a 25 g sample of water from 5°C to 10.°C. i got 523 then rounded it to two sig figs 520 but it said it was wrong

**chemistry**

I got it wrong. can u explain it better. i don't think that is in the correct equation form??

**chemistry**

oops. forget what I said last

**chemistry**

how do i know what that mass of the ice is?

**chemistry**

thanks. um. i got 201. but it said it was wrong

**chemistry**

oops here. When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 12.0 fluid ounce drink from 75°F to 35°F, if the heat capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.)

**chemistry**

capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.)

**chemistry**

I got it:)

**chemistry**

If 1.68 L of water is initially at 25.0 °C, what will its temperature be after absorption of 6.8 10-2 kWh of heat? I don't know how to set it up because i have the equation q= m times c times change in temp (the triangle and the a T is the symbol for that. I know ther ...

**chemistry**

I got it:) it was 5e2

**chemistry**

I got it wrong! would it be 5e3. cause i messed up on the amount of spaces but idk if that is the correct sig fig?

**chemistry**

Calculate the amount of heat required to raise the temperature of a 16 g sample of water from 5°C to 12°C. Round to the correct number of sig figs. I got 5e3 and it was wrong.

**Algebra**

just to conferm is this the question 4x^2 - 5x ?

**Questions about the Crucible**

1) What happens when john turns to elizabeth for advice in act 4. Also... I cant find the physical appearance for Francis Nurse. Does anyone know how he is portrayed and looks like in the play

**Chemistry**

.Question part Points Submissions 1 0/0.5 2/3 Total 0/0.5 ...In the explosion of a hydrogen-filled balloon, 0.75 g of hydrogen reacted with 6.9 g of oxygen to form how many grams of water vapor? (Water vapor is the only product.) i already posted this but i don't think ...

**Chemistry**

349 kJ to joules

**math**

divide 49 by -7

**math**

divide -15 by 5. so -3

**chemistry**

i got 5.76e4 but its wrong

**chemistry**

241 kJ to Calories how do i do this?

**Chemistry**

In the explosion of a hydrogen-filled balloon, 0.75 g of hydrogen reacted with 6.9 g of oxygen to form how many grams of water vapor? (Water vapor is the only product.) I am really confused on how to do this.

**Math**

11+d=b b+3 +d=37 so.. plug in the top equation to the bottom and you get d+11 +d=37 so 2d=26 divide and you get d=13 plug this into the top equation and you get b=24 so answer: b=24 d=13 and you check by adding both and they equal 37

**rly need help on math problem!**

Directions: Use each statement as givena and draw a single conclusion using all of the statements. 1) No birds,except ostriches, are nine feet high.There are no birds in this aviary that belong to anyone but me. No ostrich lives on mince pie. I have no birds less than nine ...

**begining algebra**

(y/4) +y simplified: 5/4y

**maths**

2=1/n multiply by n 2n=1 divide by 2 n=1/2

**math-logic**

oops for 1) i got eggshells => not unselfish

**math-logic**

use each statement as given, and draw a single conclusion using all of the statements. => means implies 1) no misers are unselfish.None but misers save eggshells. Answer i got: eggshells => unselfish 2) Every eagle can fly.Some pigs cannot fly Answer 1 got:Every eagle =&...

**maths**

plug in the numbers so 20=4r then divide by 4 20/4 so 5=r

**quick chemistry**

A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen. What is solid B most likely to be? a)...

**conversion problems**

thanks

**conversion problems**

convert 3.1 L to quarts

**chemistry**

ok,thanks.. so i got a)810 b)50. c)6.7 is that correct?

**chemistry**

Fill in the blanks. (a) 5.6 ft2 = ____ in2 (b) 5.6 yd2 = _____ ft2 (c) 5.6 m2 = ____ yd2 can you please explain how to do it

**algebra 1**

A0 h=12s b)just plug in those numbers for s:)

**digital photagraphy**

im not 100% but wouldn't it be Emphasis and Proportion

**Chemisty (Sig Figs)**

What do you mean?

**Chemisty (Sig Figs)**

1.20 Mm to kilometers its 1200 but when I put it in it said not the correct number of sig figs

**english**

I don't really understand your question? are you talking about 1st,2nd and 3rd person?

**sig figs**

how do you round 0.009934 to two sig figs? would it be .010? or would that be 3 sig figs?

**Math**

oh ok. you have to put that into slope intercept form. So it would be 8y=2 (because when we subtract the 3x with the 3x it cancels out) then divide the 8 so y= 1/4 im pretty sure that's how it would reduce down to now you just have to pull your info from that

**Math**

0=6x + 8 +8y is that what the question is? it should most likely be in this format y=mx+b

**poetry**

I think it is beautiful

**science**

i think it would be chemical weathering

**Chemistry-sig figs**

ernest y did u post that on my question? it doesn't ever pertain to my question

**Chemistry-sig figs**

oh so is it incorrect and the answer is 1.2 or is it 1.20? does the second answer have 3 sig figs?

**Chemistry-sig figs**

where did you get 0.049?

**Chemistry-sig figs**

Each of the following numbers was supposed to be rounded to two significant figures. For each one below, decide whether it was correctly rounded or not, and for those that were incorrectly rounded, correct them (a) 1.249 X 10 to the 3rd power. They said it rounded to 1.3 X 10 ...

**Chemisty (Sig Figs)**

so i am terrible at this. Round each number to 3 significant numbers. Can you explain? 1. 9845.42800 2. 1.548937675e12 3. 10.7771777425 4. 0.000045875 thanks:)

**French**

Thanks:)

**French**

what does this mean? "Quelle est ta matiere scolaire preferee? thanks:)

**French**

I got it!

**French**

How do you say "I prefere track" interms of the sport and not the actual track. I know how to say I prefer and I know that track has the word l'athletisme(sp?) but I'm not sure what come before. Is it faire or jour and is it du after that? Thanks:)

**History**

Do you think modernization was a positive or negative movement in the Ottoman Empire? Why?

**Biology**

How have guppies adapted over time to their freshwater environment? thanks:)

**Biology**

What kinds of cells make it difficult to tear fern leaves from a plant? thanks:)

**algebra**

9=-3/8r

**Biology**

I know that miller syndrome is autosomal recessive so would i use a karyotype or pedegree to represent that because I have to: Include a pedegree of at least 3 generations to demonstrate the inheritance pattern. Be sure to label and explain the chart accurately so that someone...

**Biology**

ok thanks