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September 2, 2014

Search: 8th grd chemistry:D

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8th grd chemistry:D
which of these statements is true about an atom of chromium? (A) has more protons then electrons. (B) has fewer parts than an atom of iron. (C) has an atomic number of 51.996. (D) has more electrons than neutrons.
April 21, 2010 by HELP ME PLEASE!

math-grd 11
what do they mean by sine regression? i am currently working on the grd 11 isu and i am just wondering how i am supposed to incorpporate sine regreession into it? my isu is, you have a picture you have to find a curve in it and figure out the equation of it
April 4, 2010 by just wondering

chemistry
Im brenda,n i found its hard copng in chemistry.im dng grd 11,n i wish 2 hv sm1 wo wil hlp m cope.tnx
July 20, 2011 by Brenda nyathikazi

grd 11
what is sin regression?
April 4, 2010 by just wondering

math grd 10
factor the polynomials x^2 -6 x^2 +5x-6
October 3, 2011 by kerry

grd 12 U chemistry
Hi, i have a project for chemistry, i have to choose a scientist (i chose Micheal Smith) his career is biochemistry and i have to create a career related to biochemistry.. Question: After finding the famous chemist and then using their field of chemistry, create a career that ...
September 28, 2013 by Sky

GRD 11-NEEED IT FAST, EMERGENCY
WHAT IS SIN REGRESSION ?
April 4, 2010 by just wondering

Chemistry grd 11
Provided with enough heat, magnesium and oxygen can undergo a synthesis reaction. How much magnesium oxide is produced if 50g of Mg is reacted with 50g of oxygen?
November 8, 2010 by Tarkan

Chemistry grd 11
Provided with enough heat, magnesium and oxygen can undergo a synthesis reaction. How much magnesium oxide is produced if 50g of Mg is reacted with 50g of oxygen?
November 8, 2010 by Tarkan

functions grd 12
what are the number of turning points for this equation? y=4x^2 and can you plz expain how u find them thanks :)
October 2, 2011 by kerry

math grd 11
how do u draw an asymtote ? diff btwn set and interval notation? and example plz
April 15, 2010 by forki

social studies
i am a 7th grd and i have to do a three page eassy on been respectful it due by 3/23/11
March 23, 2011 by rose

math
build equation Of the 15 players on the boys' soccer team, 2/5 are 8th graders. On the girls' soccer team,1/3 of 18 are 8th graders. How many 8th graders plaayed on the two teams.
February 22, 2012 by Anonymous

8th Grade
Whta is a verctorican (srry i can't spell that) award when the 8th graders get one?????
November 19, 2011 by Laruen

Science grd 9
Calculate the cost of watching TV for 5 h at night at a rate of 8.8 cents/kWh. The TV has a power rating of 180W. Please show work
December 2, 2010 by Gagan

math grd 11-midterm tomm
please explain how do u draw an asymtote ? and whats the diff btwn set and interval notation? and example plz thanks
April 15, 2010 by just wondering

5th grd math- metric conversion
30m = 6000, i have converted to cm, in, and ft, no where close to getting 6000? help
March 7, 2011 by Lydia

Grd 12 Math
Can someone please help me work out how to get to the answer of: tanx + tan (pi-x) + cot (pi/2+x) = tan (2pi-x)
November 6, 2013 by Jess

8th Grade
Me and my friend are making our own 8th grade binder, you know like writing down planns for our 8th grade year. Here are the sections: - To-Do-List - Doodles (if you are bored) - Projects that are do (school plans) - Graduation Plans (speech, to-do-list, etc.) - Dates for ...
December 5, 2011 by Laruen

Math grd 12
In how many ways can you make Rhe border if it requires 15 titles and you use only blue and white ones? Explain your reasoning. The final answer is 8008.
November 21, 2010 by Celina

physics grd 12
two charged object are positioned 15cm apart. spere a has a charge 3.6 x 10^-7 C and b has a charge of -8.1 x 10 ^ -7 C. at what point is the field intensity 0 ?
June 2, 2011 by psics

reading
Could 8th grades books to read? I am more on a college/highschool reading level but i need the appropriateness for an 8th grader. thanks.
September 9, 2011 by gail

Math grd 12
How many different seven-digit telephone numbers are possible if no number may begin with 0?.....the answer is 9,000,000 but I'm not sure how to get that, plz explain:)
November 21, 2010 by Celina

Grd 12 life orientation
Describe the life style behaviour and explain 5 factors that contribute to the substance abuse of both legal and illegal drugs among the youth
April 17, 2013 by Maupa Dimpho

Math
Help me please to simplify 8 to 8th power x 8 negative 8th power
February 6, 2011 by Tiffany

chemistry
(3.21x10 to the 8th)(6.32x10 to the -12th) is it... 20.2872x10 to the -4th?
September 10, 2008 by hellllp!

advanced functions grd 12
im not sure wheer to start and how to do solve this problem solve: cosX(2sinX-3^1/2)=0 ,0<(or equal to)X<(or equal to)2(pie sign)
May 8, 2012 by kerry

chemestry grd 11
indigo C16H10N2O2 (numbers are suppose to b as a subscript) is the common name of the dye that gives blue jeans their characteristic colour. Calculate the mass of oxygenin 25.0g og indigo. show your work.
May 1, 2011 by celina

math grd 10
a trapiziod has vertices A(-2,3) B(4,1) C(-1,-1) and D(2,-2). prove that the line joining the midpoints of the non-parallel sides is the average length of the two parallel sides of the trapaziod.
October 12, 2011 by GAGAN

8th grade
im in advanced math so i do 8th grade math and i dont understand how too gragh the fractions in equations like y=2/3x+1
November 29, 2009 by jazmine

science
This is for a 4th grd science project. I am in doubt in what independent variables to use for the project. The topic that my daughter selected is Does heart rate INCREASE with INCREASING SOUND volume? Thank you for your help!!!
October 6, 2011 by priscila

Science grd 9
Determine which appliance uses the most electrical energy: a clothes dryer that operates for 30 min/day or a freezer that operates for 24h/day. Please show work
December 2, 2010 by Gagan

Precalc
Find a formula for the nth term if... a)the 8th term is 8 and the 20th term is 44 b) the 8th term is 4 and the 18th term is -96 thanks!! I am just confused how you do this if you dont know what n is.
May 12, 2013 by Rebekah

8th grade
In chemistry what is the practical applicaiton of scientific principles to solve everyday problems?
November 17, 2008 by Aaron

10th grade - chemistry
what is 670.8/1000000000 and then what is 3.0 * 10 to the 8th power divided by the top answer ...
November 21, 2010 by yessi

8th grade chemistry
which of the following molecules does not contain 5 atoms? A. CaCO3 B. Mg(OH)2 C. NaHCO3 D. Fe2O3
October 31, 2013 by Anonymous

math-11
okay this is the frst day of grd 11 math and i am doing review and i dont remember anything what do they mean when they say " determine the velue of the three primary trigonometric ratios for <BAC in each of the following triangle.? and they give us the length of A-C which ...
February 4, 2010 by just wondering

Maths literacy,history,life science,english,xhosa,life orantation,geography.
I'am doing grade 11 now and when i passed grd 12 next year.i want to know what caree is good for my subjects ,because i don't know what caree should i take.
June 18, 2014 by Avumile

math
in an ap the difference is between the 8th and 4th term is 20 and the 8th term is one and the half times the fourth term what is the common difference
November 8, 2013 by dammy

algebra
A plumber needs 4 sections of pipe 2and 7/8 feet long. Can this be cut from a 12 ft. section? If so, how much pipe will be left over? If not, why not? I came up with yes, you will use 11 1/8th amount and have a section of 1 and 1/8th left. Is this correct?
May 26, 2010 by anonymous

math
The question that have is to simplify and write the answer in exponential notation using positive exponents 2 to 4th power x 2 -2 These are my choices a 4 to the 8th power b 2 to the 8th power c 4 to the 2nd power d 2 to the 2nd power
February 5, 2011 by Jimmy

math
Ok, the problem says: a Middle school has 125 6th graders, 150 7th graders, and 100 8th graders. Which statement is NOT true? a. the ratio of 6th graders to 7th graders is 5 to 6. b. the ratio of 8th graders to 7th graders is 3:2. c. the ratio of 6th graders to students in all...
January 18, 2011 by panda

chem- science - grd 11
okay so i have to prepare a procedure for the following experiment, except i have no clue what to do question- the science department had 5 different solutions but accidently lost thier labels. devise a procedure to help you determine which liquid is what? *hint- you may use ...
January 7, 2010 by just wondering

fractions
Mr.shafier has been teaching school for 10 years.For 6 of those years he taught 8th grade.what fraction represents the time Mr.shafier has not been teaching 8th grade?I knoe the answere is 2 5ths. but how do i show work?HELP!!!!!!!!!!!!!!!
December 12, 2010 by Alyssa

Science grd 9
The estimated average energy that I used to operate a cloths dryer for a year is is kWh. If the average rate to operate the dryer is 7.15 cents/kWh, what is the average cost per year.
December 2, 2010 by Gagan

6th grd math
Mary put new tiles on her kitchen floor. The floor measures 6 ft long by 5 ft wide. She used 10 tiles to cover the entire floor each tile was 3 ft long. Write an equation using the variable x to model this situation. What does x represent in the equation?
September 24, 2012 by Equations & solutions

8th grade Math
I'm actually in 7th grade, but I'm doing 8th grade pre-algebra, but anyway, here: I'm supposed to simplify these four problems and I don't really understand how: 28s (15 power) ____ 42s (12 power) 4m+(n[7th power]m) 63m(5 power)n(6 power) ______________________ 27mn 3a4a(4 ...
September 9, 2010 by Mika

Maths
1) In the arithmetic progression, the 8th term is twice the 4th term and the 20th term is 40. Find the common difference and the sum of the terms from the 8th to the 20th term inclusive. 2) Find the least number of terms of the AP, 1+3+5...that are required to make a sum ...
April 17, 2008 by Anonymous

Grd.10 Science
So i did a science lab today, and i am supposed to come up with the skeleton equation for it The chemical reaction is decomposition (starting with one compound that will break off into 1 or more compounds after reaction) This is what i have so far : Cu (CO3) ---> CO2 + ____...
November 5, 2009 by Dawn

8th Grade Chemistry
This is from the Glencoe book Chemistry, Book L. Unlike sodium and chlorine, some atoms becomre more stable by sharing_______, forming______________rather than charged__________. The bonds in a molecule of oxygen are _______ _______ bonds, while the bonds in molecule of water ...
November 15, 2011 by Eric

GEOGRAPHY,HISTORY,MATHS LIT AND LIFE SCIENCES
HI I'M MLULEKI NDOVELA FRM UMLAZI SEC SCHOOL IM DOING GRD 12 STDYNG GEOGRAPHY,HISTORY,MATHS LIT,LIFE SCIENCES I WANT TO KNW WHCH CAREER PATH IS CAN I TAKE.
July 9, 2014 by MLULEKI NDOVELA AT UMLAZI SECO DOING GRD 12

Chemistry
A sample of charcoal is found to have only 1/8th of Carbon-14. Half-life of Carbon-14 is 5730yrs, what is the age of the charcoal?
December 1, 2012 by Anonymous

Grd 12 U English
I am the discussion director for my group. I have to grab 4 reallyyy good discussion questions for the book The Kite Runner. I already found one good question, I need the other 3. It has to be from chapter 1-3 PLEASE help me out, i'm so stuck, honestly I really want my group ...
July 8, 2013 by Kristen

Chemistry
Ba-140 has a half life of 13.0 days. What fraction of a sample of Ba-140 will remain after 39 days? A. 1/8th B. 1/16th C. 1/2th D. 1/4th
May 23, 2010 by Charleze

chemistry
i have a question on scientific notation. is you have: 8x10 to the 5th power over 2x10 to the -3rd power is the answer 4x10 to the 8th?
September 10, 2008 by Mary

what can i compare middle school to?
what can i compare middle school to? (use in metaphor), based on 6th, 7th, and 8th grade. for example playing monopoly 6th grade - buying properties, 7th grade- adjusting to the game, 8th grade - stress over money
May 16, 2010 by NEEDSHELP(:

math
A school has 6th, 7th and 8th period Social Studies classes. One student from each class will be chosen to represent the school in an essay contest. The 6th period finalists are Mike, Sara, Luis and Ed. The 7th period finalists are Ben, Eric, and Sandy. The 8th period ...
April 26, 2008 by kevin

Math 3 grd
How do I find the area and the volume of a prism using base-10 blocks? well, the area is found by multiplying length x width. so it would be 10 x 10, which equals 100. The volume, however, isn't much more work to find the answer. Volume=length x width x height... which means ...
May 2, 2007 by Miquela

Math grd 12
You are setting a system programing codes for a universal TV remote control. Each code will have five digits and cannot include a 0 or repeat any digits. How many codes a)do not contain a 7? b)have 3 as the third digit, and 5 as the fifth digit c)begin with an even digit? d)...
November 21, 2010 by Celina

Chemistry grd 12
for the below questions the food samples were onion juice, cornflakes, egg, milk, salad dressing and instant oatmeal. 1) Why are you required to wear safety eye wear and protective clothing while conducting an investigation of testing food samples for proteins,starch,sugar and...
October 27, 2013 by Sky

Math grd 12
The number of nuts in a package of Nutty's premium cashews is normally distributed with mean of 432.4 nuts and standard deviation of 5.8 nuts packages with fewer than 420 nuts or more than 445 nuts will be rejected by quality control a) what is the probability that a package ...
January 19, 2011 by Celina

Pre-Algebra
Find each product or Quotient. Express using exponents. 1. The quotient of a to the 8th power and a to the 8th power? a 2. The quotient of -x to the 5th power and -x? -x to the 4th power 3. (15/5)(n to the 9th power/ n)? 3n go the 10th power Neutral water has a pH of 7. Each ...
January 18, 2011 by TiffanyJ

Business studies
Hi, my question involves listing assets and liabilities for week ending 14th of January for a plumbing company. The plumber has bought some tools on the 8th but is not paying for them until the 23rd. Would I need to list the tools as a fixed asset (as they benifit the company)...
June 25, 2008 by Sam

science
Is venus the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th or 9th smallest planet? Also is it the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th or 9th largest planet?
October 9, 2012 by Yog

8th grade
what is x-y=6
October 17, 2008 by german

8th grade
n+3=12
May 27, 2009 by andrew

8th grade
-5+(5)
October 20, 2009 by aj

8th grade
a=1m,b=3m
December 1, 2009 by Anonymous

8th grade
how do you do 9-y=1.5x?
December 10, 2009 by karen

8th grade
4+6x-9x=3x
August 26, 2010 by Dee

algebra 8th
-4.7-(-4.7) = 0 ???
August 31, 2010 by Ana

8th Math
-5x-10 = 2-(x+4)
August 25, 2013 by Cassidy

Math 8th gr.
27 - (-9) (-2) 3 * (-4) - 0 - 33 - (-39)
May 20, 2014 by Alexis De La Rosa

Math 8th gr.
27 - (-9) (-2) 3 * (-4) - 0 - 33 - (-39)
May 21, 2014 by Alexis De La Rosa

8th grade
what is radiation
October 2, 2008 by ajibola

8th grade
what percent of 60 is 15
December 2, 2008 by kyle dougherty

8th grade
what's the answer to .5x-y=8
December 10, 2008 by Morgan

8th grade
What is domain?
February 6, 2009 by Alice

8th math(Algebra)
what is 8a+b=1 8a-3b=3
February 18, 2009 by Jamiee

8th grade
how do you simplify: 3x+6 ---- 3x^2
May 11, 2009 by katie

8th Grade Math
If x/y=4, x-y=9, and y-x=-9, what is x & y?
September 24, 2009 by Sarah

8th Grade Math
If x/y=4, x-y=9, and y-x=(-9) then what is x and y?
September 24, 2009 by Sarah

8th grade
20_140
September 25, 2009 by diana

8th grade
how do we learn./
January 20, 2010 by mat

8th grade
2/5 divided by 5/6
September 7, 2010 by wesley

8th Grade Algebra
3m - 10 = 2(4m -5)
September 9, 2010 by David

8th grade
16y + 3=67
September 23, 2010 by Pam

8th grade
what is science
September 28, 2010 by mary

science
what is the 8th continent?
October 2, 2010 by anonymos

8th grade
solve 3m=8m
October 5, 2010 by nicole

8th grade
is 53 a monomial
October 11, 2010 by Johnston

8th grade
HOW TO CONVERT IN TO MM?
October 12, 2010 by JIM

8th grade
78=3c+12-c+4 solve
October 21, 2010 by Anonymous

8th grade math
7z - z
November 13, 2010 by chasity

8th grade
(18 - (-4))divide (-11) (-4) + 2
November 16, 2010 by gavin

8th grade
Solve 3r + 18 6r
December 11, 2010 by Dean

Math 8th grade
.02(2X-3)-0.03(3x(.2)=-.02
December 12, 2010 by Drew

math
What is the 8th term of (3x-1/2y)^10
May 23, 2011 by corey

math 8th grade
-15 - (3-7) + 6 * (-2) + (-8) - 9
May 21, 2014 by anonymus

Math 8th Grade!!!!
27 - (-9) (-2) 3 * (-4) - 0 - 33 - (-39)
May 21, 2014 by Max

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