Saturday

April 19, 2014

April 19, 2014

Total # Posts: 1,513

**Chemistry**

Decide which of the substances listed can form hydrogen bonds? H20 H2O2 HF NH3 NaF H2 NO CH4

**7th grade math**

Find the area of the following shapes by first dividing them into rectangles.

**chemistry**

Aersol cans contain compressed gases that, when released, help propel the contents out of the can. Why is it important to keep aersol cans from overheating?

**Chemistry**

In a methane molecule (CH4) there are 4 single covalent bonds. In an octane molecule (C8H18) there are 25 single covalent bonds. How does the number of bonds affect the dispersion forces in samples of methane and octane? Which compound is a gas at room temperature? which is a ...

**Physics**

What condition is necessary for the flow of heat? what analogous condition is necesary for the flow of charge?

**science**

A class is to perform an experiment to study the effects of various plant foods on a type of indoor plant.The teacher provides three similar plants,a water supply,and three different packets of plant food.Explain how you might conduct a controlled experiment.

**Pre-Calculus**

Solve the equation over the interval [0,2π) 4csc^2+1 = 0

**Biology**

If you've seen the movie GATTACA : What was in the card Eugene gave to Vincent? Why does Eugene think that he got the better end of the deal?

**Physical Science**

thankyou!!!!!!

**Physical Science**

Explain how you would test to see if palladium is a metal?

**Math**

a histogram a graph like a bar graph but x axis numbers you make have a difference like if you have a set of number 50-90 you would do on the bottom 50-59 and 60- 69 so you would make bar lines and on the y axis you would put 1 2 3 so if you had 5 numers that would be between ...

**algebra 1 page 169 did you hear about...**

my words are: robins because rooster so name sun best the was banks gave wrecked robinson farmer crew he whp pet the his. Please help paper due tomorrow

**math**

3+3=6 10+10=20 4.3+3.3

**biology**

create a punnett square crossing two individuals who are heterozygous for eyebrows. Identify the genotypes( ratios) Identify the phenotype (ratio) Draw phenotype

**biology**

create a punnett square crossing one person who has square palms (a) with someone who is heterozygous for palm size(Aa). What are the genotypes(ratios) Draw the phenotype

**biology**

Create a punnett square crossing one person who is heterozygous for separate eyebrows ( E) with a uni- browed person (e). What are the geneotypes? Draw the Phenotype

**algebra 1a**

4w+x+2y-3z=-16, -3w+3x-y+4z=20, -w+2x+5y+z=-4, 5w+4x+3y-z=-10

**Chemistry**

How would you write a skeleton equation for these reactions I always get confused nickel(II)chloride(s)+oxygen(g)= nickel (II) oxide(s) +dichlorine pentaoxide (g) lithium chromate(aq)+barium chloride(aq)= lithium chloride(aq)+barium chormate(s)

**math**

lyne you rock thanks taylor

**math**

buy two coats for the sum of $77 the product of the purchase is $1440 what is the cost of each coat both the sum and the product must be involved

**geometry**

Increase

**algebra**

-9(6+u)-2u= -10 =-54 + 9u-2u= -10 +54 +54 = 7u= 44 = divide 7 on both sides u= 6.28 13x-21x-7=-63 =-8x -7=63 +7 +7 = -8x = -56 = divide by 8 on both sides x= 7

**math**

the product is the second part of the question help

**math**

you buy two coats the sum is $77 the product of your purchase is $1440 how much is each coat

**biology**

I will connect Gametes with A.Chromatid B. Cell C. Cell Division D. 46 E. IPMAT F. Cytokinesis AND WHY?

**biology**

I would connect Mitosis with Identical cells. Why?

**Geometry**

A new pipeline is being constructed to re-route its oil flow around the exterior of a national wildlife preserve. New pipeline 60 miles , 32 miles, x=old pipeline. About how many extra miles will the oil flow once the new route is established? A. 24 B. 68 C. 92 D. 160

**CHEMISTRY HELP! ICE TABLES?**

At a certain temperature, K = 9.1 10-4 for the following reaction. FeSCN2+(aq)= Fe3+(aq) + SCN -(aq) Calculate the concentrations of Fe3+, SCN -, and FeSCN2+ in a solution that is initially 4.0 M FeSCN2+. OKAY SO i started by doing an ice table with FeSCN2+(aq)= Fe3+(aq) + SCN...

**College Lookup?**

Can someone teach me how to search colleges like when people say. oh what major is that college good for? I need help finding that. any suggestions on liberal arts colleges?

**health**

what is ringworm ?

**pre- algebra**

what does grams mean??

**Pre- Algebra**

What does the prefix centi- mean???

**Pre- Agebra**

what does the prefix centi- mean?????

**Pre- Agebra**

I walk 3.5 kilometers every day. How far do I walk in days? Write this answer in meters!

**science**

Intermolecular forces of attraction.

**5th grade social studies**

If a president is unable to serve presidential power is passed on to who?

**9th grade science**

do you know the answer

**9th grade science**

my bad i ment to put 4

**9th grade science**

balance Al+CuSO2=Al2(SO4)3+Cu

**science**

yes

**science**

please balance Al+CuSO2=Al2(SO4)3+Cu

**7th grade math**

remember PEMDAS??? Parentheses Exponents Multiplication Division Addittion Subtraction

**Physics**

If you take a bite of pizza, the sauce may burn your mouth while the curst, as the same temperature will not. Explain.

**English**

Can someone please write an epigram for me?!?! 2-4 lines witty last line simple (I have to translate it into Latin)

**English/Latin**

I need help writing an epigram in english that I must translate into Latin. 2-4 lines witty last line simple (since I must translate it) Nothing vulgar

**math**

what would $48.50 be rounded to the nearest tenth?

**algebra 1**

a line passes through the point (3, -5) and has a slope of 7. which of the following is the correct point- slope form of the equation of the line and why? a.y+5= 7(x-3) b. y-5= 7(x+3) c. y+5= 7(x+3) d. y-5= 7(x-3)

**algebra**

WHY?

**algebra**

A=lw solve for l

**algebra**

so its gonna be 2-p=2l+2w-2 2p=w?

**algebra**

P=2l+2w solve for w

**algebra**

C+fifth ninths(F-32)solve for F

**algebra**

i think so...

**algebra**

it think so...

**algebra**

A=h(a+b)/2 solve for h

**algebra**

d=rt solve for r

**algebra**

x(1+y)=z solve for x

**algebra**

2x+b=c solve for x

**algebra**

4(c+3)=t solve for c

**algebra**

7x+3y=m solve for y

**algebra**

x(4-k)=p solve for k

**algebra**

xy+z=9 solve for y

**algebra**

(x+f)+ 2=j solve for x

**algebra**

anywayz... thanx dr.bob222

**algebra**

ANYWAYZZZZZ.........

**algebra**

15X+1=Y SOLVE FOR X!!!!!!

**algebra**

WELL U NO WAT I MEAN !!!! DANG!!!!

**algebra**

15x=1=y sole for x

**algebra**

ax-b=c solve for x

**science**

when ionic compounds form, the ions come together in a way that balances out the charges on the ions. true or false?

**physical science**

for an ionic compound, the name of the negative ion comes first. True or False?

**GEOMETRY**

a type of mean or average, which indicates the central tendency or typical value of set numbers

**4th grade**

a measure of the warmth or coldness of an object or substance with reference to some standard value. The temperature of two systems is the same when the systems are in thermal equilibrium. Dictionary . com (for future refrences)

**8th grade science**

What kinds of ions do a sodium atom and a chlorine atom become when valenc electron is transferred from one to the other?

**8th grade physical sience**

THANK YOU!!

**8th grade physical sience**

thanks anyways

**8th grade physical sience**

carbonate: Any other compound containing the group CO3. Carbonates include minerals such as calcite and aragonite.

**8th grade physical sience**

carbonate: A salt or ester of carbonic acid, containing the group CO3. The reaction of carbonic acid with a metal results in a salt (such as sodium carbonate), and the reaction of carbonic acid with an organic compound results in an ester (such as diethyl carbonate).

**8th grade physical sience**

it doesn't say

**8th grade physical sience**

what is the charge on carbonate ion? Compared to the number of protons, how many electrons does the carbonate ion have?

**8th grade history**

arguments in favor of adding a bill of rights to the constitution?

**physical science**

compared to metals and nonmetals, how do atoms of semimetals bahave when combining with atoms of other elements?

**physical science**

describe two ways that nonmetals can combine with other metals?

**Science**

what happens to the reactivity of metals from left to right across the periodic table?

**3rd grade**

What is the Plural Possessive of elephant trunk ?

**7th grade math**

no its 2/3

**math(Please help!!!)**

i d k

**integrated science**

describe why chemist might sometimes store reactive chemicals in argon,Ar.

**math expressions**

write an expression for 5 and p more

**math**

D. 973.44 because 900* .04= 36 36+900= 936 and 936*.04= 37.44 37.44+ 936= 973.44 beacuse 4% in decimal form is .04 and 4% is earned each year hope this helps!

**7th grade math**

What is the LCD of 29,17,and 13? 60 36 30 the number under the others mean like 29 over 60.sorry i don't know how to write them that well.

**4th grade**

______ differences produce a variety of ecosystems

**engish**

what is a concuding sentence for the story "The scarlet Ibis".

**physical science**

thank you!

**physical science**

Describe the three main ideas of Dalton's atomic theory.

**phsyical science**

compare an atoms structure to a ladder. what parts of the ladder correspond to the energy levels of the atom/ identify one way a real ladder is not a good model for an atom.

**phyical science**

explain how the path of an electron differs in bohr's model and in the modern model of the atom

**physical science**

i really need help eith this ?

**physical science**

i dont know...

**physical science**

compare the postions of the electrons in Bohr's model of the atom with their positions according to modern atomic theory

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