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March 1, 2017

Posts by john

Total # Posts: 8,260

Check spanish answers
yo anonomys i also go to connections maybe we could help each other have an email i can text to contact you?
November 14, 2016

Chemistry
Oops, the hydrate is Copper Sulfate Pentahydrate
November 13, 2016

Chemistry
A chemist takes a 647 gram sample of this hydrate. She removes all the water possible from the sample and collects it. To this water, she adds 7.6 grams of lead(II) nitrate. Afterwards she wants to precipitate all the lead. She wants to use a solution of aluminum sulfate to ...
November 13, 2016

Chemistry
CH4 + 2O2 --> CO2 + 2H2O a. How many grams of methane are needed to produce 1.5 X 10^-2 grams of carbon dioxide? b. How many grams of oxygen are needed to react to form the 1.5 X 10^-2 grams moles of carbon dioxide?
November 10, 2016

Chemistry
CH4 + 2O2 --> CO2 + 2H2O a. How many grams of methane are needed to produce 1.5 X 10^-2 grams of carbon dioxide? b. How many grams of oxygen are needed to react to form the 1.5 X 10^-2 grams moles of carbon dioxide?
November 10, 2016

Chemistry
CH4 + 2O2 --> CO2 + 2H2O a. How many grams of methane are needed to produce 1.5 X 10^-2 grams of carbon dioxide? b. How many grams of oxygen are needed to react to form the 1.5 X 10^-2 grams moles of carbon dioxide?
November 10, 2016

Chemistry
Given 1 cc of Zinc and 1 cc of Cr What is the mass difference?
November 9, 2016

Maths
An athlete takes 2 minutes and 15 seconds to jog around a 400m running track. At this speed, how long will it take them to run 12km
November 9, 2016

Physics
A 45kg skier is sliding down a 37 degree ski slope starting from rest. She crossed the 25m in 5.0s. Ignoring air resistance, Find all the forces on the skier.
November 7, 2016

Philosophy
Each of the underlined premises can be taken as an unacceptable premise in an argument. In each case, identify the condition of premise unacceptability Premise: Most people dislike quitters Conclusion: Therefore, I shouldn’t quit smoking I`m having trouble with this ...
November 6, 2016

maths
x+y+z = 180 y = 2x z =3x 6x=180 x = 30 y=60 z=90
November 3, 2016

Math
daniel = 3 + sam sam/daniel =4/5 sam/(sam + 3) = 4/5 5s = 4s + 12 s = 12
November 3, 2016

Math HELP!!
correct
November 2, 2016

Statistics
you roll two fair dice, a green one and a red one? (a) are the outcomes on the dice independent? (b)Find P(1 on green die and 2 on red die) (c)Find P(2 on green die and 1 on red die) (d)Find P(1 on green die and 2 on red die) or (2 on green die and 1 on red die) a)yes b)p(1)*(...
October 30, 2016

Math
(38.5)x>or = 4000
October 29, 2016

math
.25 x .25 x .25
October 29, 2016

Algebra
x +10 = -10 x = -20
October 29, 2016

chem
how many atoms are there in 0.0300 mole of methane molecules?
October 29, 2016

(Math) PLZ CHECK ANSWERS
1 correct 2 C 4 C 3 is there a typo?
October 28, 2016

Statisics
Ho: p = .24 Ha: p>.24
October 28, 2016

english
In which sentence is the NONESSENTIAL CLAUSE underlined? (1 point)The man leaning against the wall is from the zoo. The snake that he is holding is not poisonous. Its coloring, which is brown and green, allows it to hide in marshy areas.** That snake slithering behind the rock...
October 27, 2016

english
26. Which sentence correctly uses punctuation with dialogue? a. " Please be seated", my teacher said.** b. " Please be seated," my teacher said c. " Please be seated my teacher said." d. " Please be seated my teacher said". 28. Which of ...
October 27, 2016

english
25. which sentence is punctuated correctly? a. "Are you finished yet, Miriam asked?" b. Are you finished yet, " Miriam asked?" c. "Are you finished yet"?Miriam asked. d. "Are you finished yet?" Miriam asked.*** 26. Which sentence ...
October 27, 2016

Math
a parking lot has 66 parking spaces. If there are 16 more compact spaces than regular spaces. How many spaces are there for compact cars?
October 26, 2016

Physics
A bullet is fired with an initial speed of 200 m/s. If a target is 500ft away, at what angle should the rifle be raised in order to hit the target?
October 26, 2016

Physical Science
A bullet is fired with an initial speed of 200 m/s. If a target is 500ft away, at what angle should the rifle be raised in order to hit the target?
October 26, 2016

Math
What is the 23rd term of the sequence 2,4,6,8,
October 26, 2016

Statistics
(56-66)/6 = -10/6 = -1.67 95% of them so multiply .95 times 1900
October 26, 2016

Chemistry
I used the ideal gas law, and I got .980456 moles. then I used the equation to substitute Helium=10.0g -Krypton in the equation (x/4)+(y/83.8)=. 980456 mols for X. With a little bit of algebra, I got 6.38079g of Krypton and 3.61921g of Helium. Thanks you for the help. I wuld ...
October 25, 2016

Chemistry
A certain mixture of helium, He, and krypton, Kr, has a mass of 10.0 g and occupies a volume of 20.0 L at 25.0EC and 1.20 atm. What is the mass of He in the mixture?
October 25, 2016

Science
An automobile accelerates 1.24 m/s^2 over 6.00 s to reach freeway speed at the end of an entrance ramp. If the cars final speed is 86.0 km/h, what was its initial speed when it began accelerating? Express your answer in km/h I can do it but I just don't know how I'm ...
October 25, 2016

english
in which sentence is the essential clause underlined A. Eve's sister, {who loves opera,} took her to a performance B. Eve, {holding her program,} waited for the curtain to go up C. The soprano, {visiting from canada} had long black hair*** d. The person {who sells ...
October 25, 2016

english
21.b 22. b those was my second oppion
October 25, 2016

english
21. identify the appropriate punctuation for the underlined word or phrase In High School, I enjoyed reading (The Catcher in the Rye)<<underlined A. underlined B. italics c. quotation marks d. none 20. identify the appropriate punctuation for the underlined word or ...
October 25, 2016

english
24. identify the word or words in the sentence that need to be capitalize will you be coming o the stadium to watch the giants play sunday? a. Will,Sunday b. Will,Gaints,Sunday** C. Will D. none 23. Identify the word or words in the sentence that need to be capitalize does ...
October 25, 2016

Math
The daily temperature is decreasing at a rate of 2 degrees Fahrenheit T represent the daily high temperature now right then expression for the high temperature in five days the current at high temperatures need to address for hi-fi high temperature in five days check into you ...
October 23, 2016

Chemistry need asap
What do you mean convery each of the mols to HNO3 produced? My NO=.016 My O2=.013 My H20=.66
October 23, 2016

Chemistry need asap
Situation: The Production of Nitric Acid can be achieved by the following process: Nitrogen monoxide gas(NO) + diatomic oxygen gas+ water (liquid) ===> Nitric Acid (aq) a. Show complete balanced reaction for process What I have: 4NO+ 3O2+ 2H2O > 4HNO3 b. The lab ...
October 23, 2016

Math
5, 35, 245 can you find the other one?
October 20, 2016

Math
1/4= x-y 1 = 4x-4y (1-4x)/4 = y
October 20, 2016

Math
5(7 - 3) is this what you mean?
October 20, 2016

Math
L = 2w -16 2L + 2W = 100 substitute for "l" 2(2w-16) + 2w = 100 4w -32 + 2w =100 6w = 132 Can you finish from here?
October 20, 2016

Algebra 1
square the x value and multiply by 3.. if that value equals H(x) or y. 3(1)^2 = 3 this one works. 3(1)^2 = 3 not 9 so the second point doesn't lie on the function. Your try the last 2
October 20, 2016

science
Oh and last thing is how does half-life work
October 20, 2016

science
What is the geologic time scale and what are some thing scientists use it for (at least two things)? Here's my answer could you please verify. the geologic time scale is a record of the geologic events and life forms in Earth’s history. Scientists use it to understand...
October 20, 2016

Math
Kenny reads 4/9 page in 3/4 minute Kenny's unit rate is (what) page per minute
October 19, 2016

Math, Algebra
you are welcome
October 19, 2016

Math, Algebra
(3y-6)/3 <= -6 3y-6 <= -18 3y <= -24 y <= -8 (4y-8)/2 > 6 4y-8 >12 4y > 20 y > 5 with OR the solution is y is less than or = -8 or y>5
October 19, 2016

Maths
x= larger y= smaller x-y = 24 x= 4y 4y -y =24 3y = 24 y = 8 x = 32
October 19, 2016

Math
x + y = 27 x = 2y 2y + y = 27 3y = 27 y = 9 x = 18
October 19, 2016

Matg
15 4/4 -10 1/4 = 5 3/4 5 3/4 + 7 2/4 = 12 5/4 = 13 1/4
October 18, 2016

Algebra 1
3.25 + .65x <= 6 .65x<= 2.75 divide by .65 to get your answer.
October 18, 2016

Math
g = 24+C c = a +35 a+g+c =100 can you finish from here?
October 18, 2016

math
30/18 = L/27 5/3 = L/27 3L = 5(27) L = 45
October 18, 2016

Math
10 times 25 = 250 200 + 250 = 450 feet blow
October 18, 2016

Math
.5 = 5/10= 1/2 3/8 is less than 1/2 18/8 = 2 1/4 or 2.25
October 18, 2016

math
5 times 1.8
October 18, 2016

Maths
You want factors of 4 and -3 since they multiply to equal 12 and add to be the 1 in front of the x. you should have x = 3 and x = -4 When I worked with the first and third, I got (x-3)(x+2) x = 3 x = -2 so the x=3 showed up twice. Substitute it in each of the 3 equations to ...
October 18, 2016

Math please help
-x/(x-5) + 7x/(x^2 -3x-10) -x/x-5) + 7x (x-5)(x+2) The first fraction needs a denominator of (x-5)(x+2) Multiply the num and denom by x + 2 -x^2 -2x +7x = -x^2 +5x num over (x-5)(x+2) num factor -x(x-5) cancel the x-5 -x/(x+2)
October 18, 2016

math
7. The tennis team is selling key chains as a fundraiser. If its goal is to raise is at least 180, how many key chains must it sell at $2.25 each to meet that goal? Write and solve an inequality. a. 2.25k (greater than or equal to) 180; k (greater than or equal to) 100 b. 180k...
October 18, 2016

math
On a 28-question test, there are 2-point questions, 4-point questions, and 5-point questions. The test is worth a total of 100 points. There are twice as many 2-point questions as 5-point questions on the test. How many 2-point questions are on the test?
October 18, 2016

English
Some have more than a hundred and some have none, its very colourful and you see it every morning someone please tell me the answer
October 18, 2016

Grammer
“I don't know, but it's hanging by its feet,” chirped Flitter
October 17, 2016

Grammer
What is the simple subjects and simple predicates?
October 17, 2016

Grammer
i don't know, but it's hanging by its feet chirped flitter What is the complete subject and complete predicates
October 17, 2016

Economics-Macro
Suppose you borrow $100 of principal that must be repaid at the end of two years, along with interest of 4 percent per year. If the annual inflation rate turns out to be 8 percent, (a) What is the real rate of interest on the loan? (b) What is the real value of the principal ...
October 17, 2016

Economics-Macro
Help please?
October 17, 2016

Algebra2
It looks like inverse, x doubled from the 1st to second point and y became 1/2 as much. from 5 to 15 tripled 2 to 2/3 became 1/3
October 17, 2016

math
1/2 (n) - 6 = 4 add 6 then divide by 2.
October 17, 2016

6th grade algebra
To get the number of feet you have to take the square root of 7410 then divide that answer by 13 to get "h"
October 16, 2016

Math
5280 feet = 1 mile 90/5280 = what part of a mile 60 seconds in 1 minute and 60 minutes in 1 hour divide 1.9/3600 what part of an hour to get mph, divide the first answer by the second.
October 16, 2016

Statistics
10 disks 7 or 8 makes 2 possibilities 2/10 = 1/5
October 16, 2016

MATH
8 divided by 5 = 1.6 so 1.3 is not correct.
October 16, 2016

Math
I agree.
October 16, 2016

math
d = rt 360 = (x -t)33 360= (x+t)22.25 360 = 33x-33t 360 = 22.5x - 22.5t Can you solve from here?
October 16, 2016

Math
(12-9)/sd = 2.5 I got 2.5 by finding the inv of .0062 3/sd = 2.5 3/2.5 = sd sd = 1.2
October 15, 2016

Statistics
A confidence interval is found by adding and subtracting the margin of error. If we take the difference of 235.1 and 197.2 and divide by 2 we have the margin of error. this margin of error is found by taking 1.96 times the standard deviation. To find the standard deviation ...
October 15, 2016

Math
Do you mean something like (10-2) x 25 = 250 -50 = 200 then 200 (20-3) 4000 - 600 = 3600
October 14, 2016

Statistics
0 because if all scores are 80 the mean is 80 and all values are 80 so there is no spread in the data.
October 14, 2016

Statistics
a) a 30 instead of a 3 gives us more variability in the data.
October 14, 2016

Physics
An automobile leaves the store, first going south at 88 km/h for 2 hours, and then turns on a road heading 20 degrees east of north at 55 km/h for 1.5 hours. Calculate the (x,y) components of the net displacement of the automobile from the starting position, where the x-axis ...
October 13, 2016

Math
65t -50t =97.5 15t = 97.5 divide by 15 to find time in hours
October 13, 2016

math
(1/7)^4
October 12, 2016

math
This is a right triangle. The legs are (x+20)1 and 1x (x+20)^2 +x^2 = 450^2 2x^2 +40x + 400 = 202500 2(x^2+20 x + 200) =202500 x^2 + 20x + 200 =101250 x^2 + 20x -101050 = 0 Can you finish from here?
October 12, 2016

algebra
The line has a slope of 3 because y = mx+b where m is the slope. Perpendicular lines have slopes that are negative reciprocals. So we have a 3 which makes our perp line's slope -1/3 If you multiply the two slopes you will always get a -1 if the lines are perpendicular If ...
October 12, 2016

Math
Scientific notation always leaves one number to the left of the decimal .62 x 10 ^2 move the decimal point 1 place to the right to get 6.2 and now the exponent becomes 1.
October 12, 2016

Geometry
(3, 5) (5, -11) (x, y) 5 -3 = 2 so the x value should be 2 more than the midpoint (2,y) -11-5 = -16 difference so we need a difference of -16 from the -11 (2,-27)
October 12, 2016

Algebra 2
We have to see the table. I do know that a probability is always between 0 and 1. It looks like the only possible answer is 2/3. That is just a guess.
October 12, 2016

Algebra 2
without the table or a good description... I can't help.
October 12, 2016

Maths
1000 = k5^3 1000 = 125k 1000/125 = k k = 8 64 = 8 q^3 8 = q^3 q = 2
October 12, 2016

Geography
What are 3 types of zone?
October 12, 2016

Math
Where would I put parentheses to make this true? 7-3x4+6=27
October 11, 2016

Science
What is a bird speed flying at 12 m/s with a crosswind at 20 m/s
October 10, 2016

Math
each person gets 1/3 of the kites since there are 3 kites, each person gets 1 kite.
October 10, 2016

Statistics
I believe the E-4 is tell you to move the decimal point 4 places to the left. .000812 is less than .01 Remember all probabilities will be between 0 and 1.
October 10, 2016

spanish 2
Please fill in the blanks with the correct spanish form of the word in pernethesis!!!! Help Hoy yo______(ir) a un guateque campesino. ______ (ser) un ________ (event) especial en Cuba. Hay mucha _________ (food) y _________ (music). Yo _______ (estar) muy ___________ (excited...
October 10, 2016

History
i wish i knew
October 10, 2016

Statistics
Suppose systolic blood pressure (the higher of the two blood pressure readings) of a large group of individuals is normally distributed. If the mean is 122 and the standard deviation is 20, then
October 9, 2016

algebra
(x-1)/6 = 1/3 3x-3 = 6 3x = 9 x = 3
October 9, 2016

Math
16 + 7 = 23 oz. the other piece ways 12 oz.
October 9, 2016

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