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Posts by AnOnYmOuS1

Total # Posts: 127

chemistry
nvm i got it. it is naoh.

chemistry
or im thinking naoh, since hydroxide ions can form with fe^2+ to form a solid.

chemistry
given 0.0450 M ca(no3)2 and 0.0350 M fe(no3)2. when i separate them, which compound should be used? Na2co3(aq), Hcl(aq), or naoh(aq)? . and which will precipitate first? I went with hcl, and for question two, fe^2+

chemistry
Alright. It makes more sense to me now. Thank you!

chemistry
yes, the first one i understood. It was more so when AgBr in HNO3, in an acid where i don't see a common ion. with the first one i calculated solubility mathematically even though i didn't need to. My answers are: less soluble, more soluble, more, and less

chemistry
using leChatlier's principle, which of following is more or less soluble in following solutions than in pure water. and explaination for each asked for. Compared to pure water are they less, more or same? thanks. AgBr in 0.100M HBr AgBr IN 0.100 m HNO3 Fe(Oh)2 in 0.100 M ...

math
Show your work and your answer first.

Physics
A 2 kg brick falls at 5.1 m/s from a height of 6 m above a spring that has a spring constant of 47 N/m. The brick strikes and compresses the spring until it stops moving. Ignore friction effects. How much is the spring compressed by the brick? Assume that there is no Eg after ...

STATISTICS
What research steps must you go through to use the relationship between a person’s intelligence and grade average in high school so that, if you know a person’s IQ, you can more accurately predict the person’s grade average?

Physics :(( help please TT
So finally crow what's the answer ?

Physics :(( help please TT
hEY CROW ! What's Mr ?

maths
Let σ(n) be the sum of the positive divisors of an integer n and ϕ(n) be the number of positive integers smaller than n that are coprime to n. If p is a prime number, what is the maximum value σ(p)ϕ(p)?

maths
Consider the polynomial f(x)=17x4+21x3+60x2+Ax+B. Suppose that for every root λ of f(x)=0, 1/λ is also a root of f(x)=0. What is the value of A+B?

mathematics
The numbers 1,2,…,17 are divided into 5 disjoint sets. One set has 5 elements, one set has 4 elements, two sets have 3 elements and the last set contains the 2 remaining elements. Two players each choose a number from 1 to 17 at random. The probability they choose numbers...

math
6 for $2.10 1 is for 35cents

math
10 servimgs per quart, how many serving per gallon? i think 40

math
150 miles in 3 hours;how many miles in 30 minutes? my answer is 1.30

math
6 feet in 2 yards; how many yards in 10feet? i think the answer is 3

math
64 miles on 2 gallons;how many miles on 3 gallons? n=96

math
the fee to join the local pool is $445.00 for the season. the pool is advertising a 25% discount for a new members. how much will a family save if they join my answer is $111.25

math
sara wants to buy a jacket on sale. its original price is $15.00.The sale is 25% off.How much will sara save by buying the jacket on sale ? my answer is $3.75 is it correct?

math
-7+(-8)=-15

math
-5-(-5)=0

math
4+(-4)=0

math
-2-8=6

math
0-(-8)=8

math
0-8=-8

math
-2+6=4

math
0+(-5)=-5

math
-7-(-4)=-3

math
4+(-6)=-2

math
5-3=2

math
7.36+w=8.94 8.94-7.36=1.58 w=1.58

math
m+18=78 78-18=60 m=60

math
n - 4.7 = 8.4 8.4 - 4.7 = 3.7 n-3.7

math
y+18=39 y+18-18=39-___ 39-18=21 21+18-18=39-21 Answer-18

math
5(35-18)+1 5(17)+1 51+1=52

math
(100-25)x2+25 75x2+25 150+25=175

math
60/12x(4-1) 60/12x3 5x3=15

math
(24-10)-3x3= 14-3x3 14-9=5

math
15-18/9+3 15-2+3 13+3=16

math
3/7x1/2= 3x1=3 7x2=14 3/14

math
4/5x1/6= 4x1=4 5x6=30 4/30=2/15 2/15

math
9/10-3/10=6/10

math
3/8+1/8=4/8 4/8=1/2

math
What is the GCF of 15,18 ? answer: 3

math
36=6 x 6 ^ ^ 3x2 3x2 Answer: 3^2 x 2^2

math
(-3)x(-6)= -6x-3= -18

math
c=11+(-14) C=3

math
Name the multiplicative inverse,or reciocal,of each number. 19/3 19x3 3x19

math
(9-4)/5= 9-4= 5/5=1

MATH
2/3 X 1/4= 3/12

MATH
answer is 1/3

MATH
1/2 x 2/3= 2/5

MATH
7/12 + 2/12 = 9/12

MATH
i mean 9 i got mixed up

MATH
7/9 - 4/9 = 7-4=3 ANSWER:3/7

MATH
EXPRESS EACH RATIO AS A FRACTION IN SIMPLEST FORM. 8 CHEESE PIZZA OUT OF 14 PIZZA 8/14=4/7

math
WHAT IS THE GCF 16,24 ANSWER:8

math
5^2x3

math
Find the prime factorization of the number 75 answer 5x5x5

math
9x(-6) 9x-6= -54 answer: -54

math
-9 - (-5) = a A=4

math
2x9+5x3= How I got my Answer: 2x9=18 5x3=15 18+15=33 Answer - 33

math
200% of 7 is 1,400

MATH
The exact value of 49-24 is between 2 and 5

math
(3+4)^2= A-13 B-14 C-19 D-25 E-49 3+4=7 7X7=49 E-49

math
juan travels at the rate of 30miles per hour for 4 hours. He then return over the same route in 3 hours.What was his average rate for the return trip in miles per hour a-22 1/2 b-34 2/7 c-35 d-36 e-40 answer: f-40

math
kenny buys candy bar s at 9 for $1. How many candy bars must he sell in order for him to make a profit of exactly $10? F-27 G-30 H-45 J-60 K-90 answer:H-45

math
suppose a snail crawls 2/5 inch per second . at this rate what is the total number of inches the snail crawls in 2 minutes? a-48 b-30 c-24 d-5 e-4/5

math
the value of 3^5 + 3^5 is F-3^6 G-3^15 H-9^5 J-9^125 K-45 answer- F:3^6

math
if 15-2x<7, then for all possible values of x that make the inequality true, a - x<8 b - x>8 c - x>4 d - x<4 e - x-1/4 answer: c - x>4

math
eight years from now,Oana will be twice as old as her brother is now.Oana is now 12 year old. How old is her brother now? f-2 g-4 h-6 j-10 k-16 12/2=6 or 12+8=20 20/2=10

math
Two consecutive odd primes, such as 11 and 13, are called a pair of "twin primes" how many pairs of twin primes are there between 15 and 45? F-2 G-3 H-4 J-5 K-7

math
Two consecutive odd primes, such as 11 and 13, are called a pair of "twin patterns

math :D
which of the following is closest in value to .213 f-1/2 g-1/3 h-1/4 j-1/5 k-1/6 answer:j-1/5

math
60x30 ----- 60+30 a-2 b-20 c-200 d-2000 e-none of these 60x30=1800 60+30=90 1800/90=20 answer b-20

math
Ms. Jones has a garden plot that measures 40ftX 20ft If she increases the garden by 4 ft on each side, by what percent has she increased the plot?

MATH
what is 0.43 written as a percent

math
25% of 4,000 a-1/25 b-1/5 c-1/4 d-1/3 e-1/2

math
find 125% of 400 425

math
find 83% of 116 137.78

math
0.04 * 0.23= 23+4=27 _____0.27_____

math
8+17.43+9.2 17.43+9.2=26.63 26.63+9.2=35.63 =35.63

math
the sum of two number is 41 .one number is one less than twice the other find the larger of the two number a- 13 b- 14 c- 21 d- 27 e- 41

math
find the area of the circle if the radius is 11 a-22mm^2 b-121mm^2 c-121pimm^2 d-132mm^2 e-132mm^2

math
find the circumferrence of a if it radius is 3mm. a-3pimm b-6pimm c-9pimm d-12pimm e-15pimm 6pimm

math
7z + 1 - z = 2z -7 a - -2 b - 0 c - 1 d - 2 e - 3 a- -2

math
4x-2=10 4x2-2=10 2

math
(2r+s)14r= A-28rs B-15p^4t C-15p^4t^2 D-8p^2t e-8p^4t^2 c

math
1.032+0.987+3.07= 1.032+0.987=2.019 2.019+3.07=5.089 5.089

math
16/24=_________ 16/8=2 24/8=4 1/2

math
28/32 28/4=7 32/4=8 7/8

math
n/12=3/4= 4n=36 36/4=9 9/12=3/4 9

math
2/3=n/72 3n=144 144/3=48 48

math
4/n = 8/5 8n=20 20/8=2.5 2.5

math
x+y=7 x-y= -3 2+5=7 2-5= -3 7,-3

math
14m^2n-6m^2n= a- 20m^2 b- 8m^2n c- 8m d- 8 e- 8m^4n^2

math
50% of 182 182x.50=91 91

math
3% of 80 2.4

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