04/15/17
A man made $169 for 13 hours of work. At the same rate, how many hours would he have to work to make #234?
A man made $169 for 13 hours of work. At the same rate, how many hours would he have to work to make $234?
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04/15/17
If we mix water and flour to make dough then the formation of dough is a physical change or chemical change?
There is no heat or anything is applied. Just water and flour and beating it to make dough. So is it a physical or chemical change?
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04/15/17
Robert spent 3/8 of his monthly income on food and 3/10 of the remaining on house rent. What fraction of the income is left with him?
I dont know how to solve this problem. Please help me out. Aksvskskgebemskbbxknsbsnskskkdbdndjkwhwnsnxbdbjsjsjdnj
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04/14/17
formation of scum
write an equation to show the formation of scum when a soap is used in water containing calcium hydrogentrioxocarbonate (IV)
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04/14/17
if one batch requires 3/4 cup, how many cups will be needed to make 3 batches
how many cups are needed to make three batches
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04/14/17
Sound waves in air travel at approximately 330m/s. Calculate the frequency of a 2.5m-long sound wave.
ap physics
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04/13/17
Calculate the OH - concentration present in water under the following conditions. Enter your answer in scientific notation.
a. [H3O+] = 9.1 x 10-7 M
b. [H3O+] = 4.5 x 10-4 M
c. [H3O+] = 9.3 x 10-12 M
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04/13/17
Calculate the H3O+ concentration present in water under the following conditions. Enter your answer in scientific notation.
a. [OH-] = 5.2 x 10-10 M
b. [OH-] = 9.2 x 10-4 M
c. [OH-] = 2.0 x 10-10 M
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04/13/17
Which of the following statements are correct at equilibrium?
a. The forward and reverse reactions stop. b. The concentration of reactants and products does not change. c. The rate of the forward reaction is greater than the rate of the reverse reaction.
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04/13/17
Give the formula for the conjugate acid of each base.
a. OH-
b. Cl-
c. CH3NH2
d. PO32-
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04/12/17
Sean drove 15% of the distance to Miami and he has gone 120 miles so far. How far is it to Miami?
needing help with solving percentage problems
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04/11/17
Chemistry Titration help
I am doing an experiment at school and I just needed some help with my titration calculation (we are doing a titration with wine with NaOH solution, we are using 10 ml of wine that is to be...
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04/11/17
A tree with a height of 15 feet casts a shadow that is 32 feet in length.
I need help for a pre my test before we take the Istep10.2 in the next two weeks. I want to know how to do problems like this.
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04/11/17
the total mass of two boys is 87kg if twice the mass of one boy exceeds the mass of the other boy by 33kg find the mass of each boy
the total mass of two boys is 87kg. if twice the ,mass of one boy exceeds the mass of the other boy by 33kg , find the mass of each boy
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04/10/17
Which will experience the greater effective nuclear charge?
The electrons in the n=3 shell in Ar or the n=3 shell in Kr? And which will be closer to the nucleus?
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04/10/17
two garden plots are to have the same area. One is square and one is rectangular. The rectangular plot is 4 meter wide and 9 meters long.
how large is one side of the square garden plot in meters
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04/10/17
jim runs 10 miles in 75 minutes. At the same rate, how many miles would he run in 69 minutes
jim runs 10 miles in 75 minutes. At the same rate, how many miles would he run in 69 minutes?
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Chemistry 1211 Post Lab question. Im stuck, please help!
1. Consider a possible explaination for the fact that the hydrogen spectrum shows four line in the visible region, helium shows eight, soduium shows two and neon shows sixteen.
2. Could...
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04/10/17
Max decimal place result for calculations against 3 decimal places
What is the maximum number of decimal places for a calculation of 0.165 * n (n being any number with no more than 3 decimal places)
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04/10/17
sweat glands are most numerous in the soles of the feet and the elbow
need to know this.
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04/10/17
Gina just signed a four-year lease agreement for her first car. She had a down payment of $650. Her monthly payments are $268.73.
How much will Gina have paid to lease the car at the end of the four-year term?
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04/10/17
Jack borrows $8000 from a bank to buy his first car. His monthly payment is $187.20 for four years.
a) Calculate the total amount that Jack will repay the bank. b) How much interest will he pay over the life of the loan?
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04/10/17
How to answer this?
The replicate results (mg/L) obtained from calcium determination of a blood sample using atomic absorption spectrophotometry (AAS) and a new colorimetric method were as following: AAS : 11.2, 11.2,...
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