60,616 results, page 29
A cup of teat containing 400g of liquid at 20 degrees celsius was heated. If 58.5 kj of heat was absorbed by the tea, what would the final temperature be? Assume that the specific heat of the tea is the same as that of water (4.18). I am not sure how to start this problem. ...
The term mole is used in chemistry to define an amount of a substance. For example, a mole of glucose, blood sugar, weighs 180.16 grams. A common concentration unit for solutions is moles of substance per liter of solution. We abbreviate this with the symbol M. For example, 0....
Consider a simple economy consisting of only four firms. Firm A, a mining enterprise, extracts iron ore. Firm B, a Steelmaker, produces steel sheets. Firm C, a carmaker, makes automobile while Firm D produces automobile tires. In 2016, firm A extracts 50,000 tons of ores, ...
Please can you give me what are the products , the colour of the flame, how does it react when : 1- Zinc reacting with oxygen Zinc reacting with air 2- Iron filings with oxygen Iron filings with air 3- Copper reacting with oxygen Copper reacting with air 4- Magnesuim reacting ...
In chemistry we are doing a lab that involves crucibles and Mg ribbon, we have three days to complete the lab. Anyways do you think it would be alright to substitute the mass of the crucible we had the first day with the mass of the crucible we had today? We know how much the ...
Posted by Jamie on Sunday, June 20, 2010 at 3:36pm. You are given three test tubes that contain colourless liquid. One test tube contains benzene, another contains ethanol, and the third contains 2,4-hexadiene. Design a procedure that will tell you the contents of each test ...
I need serious help with 3 different chemistry problems: 1. If coal is assumed to be all carbon, carbon has a molecular weight of 12 lb-mass/lb-mol, and oxgyen (diatomic) has a molecular weight of 32 lb-mass/lb-mol, how much carbon dioxide (lb-mass/day) is produced in 171.4 lb...
Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution. I really need help. I do not understand these questions! This is from a chemistry activity to determine the unknown concentration of an ...
I'm having trouble naming this organic chemistry compound. (I'm not sure how to include a picture in this, so I'll try my best to explain it in words and attempt to type it out) The full formula is C9H16. It's an alkyne and the longest carbon chain is 5 carbons long, so I know...
What is the ^S for NaCl (l)?
what is chemistry
what is a pi bond?
How do i solve [A]=[A]0 x e^-kt for k
What does "Kc" mean?
what is the pH of a 0.10 M NH3???
what is the pH of a 0.10 M HC2H3O2
How does pH = 8.75 give (H^+) = 1.77 x 10^-9.
How does pH = 8.75 give (H^+) = 1.77 x 10^-9
1000 mm = how many km
.001 Ml= how many mL
10-g what does it mean?
what is a compuond?
what is an atom
what is AL(MnO4)3
What is iron
what is mmHg?
1.00 mole H2
Which value of Ke
0.600 mL= L
0.600 mL= L
Al is the symbol for
How many moles are there in 23.6g Ag?
What is C2H5OH?
what is Ph of [H+] = 0.00010M?
What is sulute
what is the oxidation no of I3-
Fe+O2+H2o - ??????????/
what is the pH of 0.15 M NaF?
28.06 mL to grams
how to simplify (x 3-x)/(x-1)?
how to simplify ((x^3)-x)/(x-1)
what are isotopes???
What is a enantiomer?
2 NO(g) + 1 O2(g) <==> 2 NO2(g)
What is H+(aq) + –OH(aq) H2O(l)
what is fe+s+hcl=
Find the Ph: of 7.01 x 10-5 M Ba(OH)2 thanks:)
What is the pH of 6.6 X 10^4 M HCL?
If 1 mg = 10^-3g and 1 Mg = 10^6g, how many milligrams are there in 0.25 Mg?
WHAT IS HS2SO4
WHat is a precipitate?
How do you convert 25.0 mg/mL to cc?
what is saponication
1228g/l to g/ml
2L of 6M HCl
[H^+] = 2.7 x 10^-3 Calculate for [OH^-] [OH^-] = ? M
How do you get the pH 13.68 into OH^-^?
Fe + K2CO3
2.35*10^-4M,,Mg(OH)2 what is the pH of this solution
What is 6.35 g divided by 6.02 x 10^23
what is mass
what is the pH of .10 M NH4CL?
what is a positron
wh at is prtoplam
what is cryogenetics
60.0 g O2=___________molecules O2
how do you know that Al(OH)3(s) is a base?
The pH of a solution of Sr(OH)2 is 12.42. What is its (OH^-)
The [OH-] of a solution with a PH 5.75 is is it 5.6*10-9M?
what is molality ?
what is molality ?
what is equillibrium?
WHAT IS ATOMICRADIUS
what are the products of Ca +H +OH-->?
What is a supernatant
V1 = 0.55 L, P1 = 740 mm Hg, V2 = 0.79 L, P2 = ?
what is a catalyst
convert 3.0m to yd