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Butane is used as a fuel in camping gas stoves.100 cm3 of butane is burned in excess oxygen .calculate the volume of carbon dioxide produced at r.t.p
Calculate the volume in liters of a
×9.810−7/mmolL
mercury(I) chloride solution that contains
400.μmol
of mercury(I) chloride
Hg2Cl2
×9.810−7/mmolL
mercury(I) chloride solution that contains
400.μmol
of mercury(I) chloride
Hg2Cl2
How chalcogen elememtsbare used in the eviroment or society?
WHAT IS THE HYDROGEN ION CONCENTRATION OF 0.1N BORIC ACID
A)1.5X10^-12
B)3.7X10^-8
C)4.82X10^-4
D)6.3X10^-6
A)1.5X10^-12
B)3.7X10^-8
C)4.82X10^-4
D)6.3X10^-6
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I have a question regarding reaction between Gold and Molybdenum. Would you please guide me? I want to plate a micrometer size layer of gold on the molybdenum. I have a bath with the composition of potassium gold cyanide and potasium bour hydride. and want to electroless plating of gold on Molybdenum. But gold deposited in the bath immediately after the entry of molybdenum. what is your suggestion to solve this problem? what is the reason of gold deposition?
I will be very grateful if you could help me. Thank you very much in advance.
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I have a question regarding reaction between Gold and Molybdenum. Would you please guide me? I want to plate a micrometer size layer of gold on the molybdenum. I have a bath with the composition of potassium gold cyanide and potasium bour hydride. and want to electroless plating of gold on Molybdenum. But gold deposited in the bath immediately after the entry of molybdenum. what is your suggestion to solve this problem? what is the reason of gold deposition?
I will be very grateful if you could help me. Thank you very much in advance.
1. what are the following is not a difference between compounds and mixtures?
A. Compounds always have definite composition, but mixtures never have definite composition.
B. Compounds can only be separated by chemical process, but mixtures can be separated by physical process.
C. Compounds are always pure substance, but mixtures never are.
D. Compaz are always homogeneous, but mixtures are always heterogeneous.
2. What type of bond results from sharing of four elections?
3. What principle states that the elements tend to react chemically to achieve a noble gas electron configuration, whether by losing, gaining, or sharing electrons?
A. Hunds rule
B. Valance rule
C. Octet rule
D. Uncertainty principle
A. Compounds always have definite composition, but mixtures never have definite composition.
B. Compounds can only be separated by chemical process, but mixtures can be separated by physical process.
C. Compounds are always pure substance, but mixtures never are.
D. Compaz are always homogeneous, but mixtures are always heterogeneous.
2. What type of bond results from sharing of four elections?
3. What principle states that the elements tend to react chemically to achieve a noble gas electron configuration, whether by losing, gaining, or sharing electrons?
A. Hunds rule
B. Valance rule
C. Octet rule
D. Uncertainty principle
1. Calculate the molarity of solution prepared by dissolving 80.0 g hydrogen fluoride in water to make 500.0 mL of solution; the more mass of HF is 20.01 g/mol.
2. A chemist needs to repair 2.50 mL of 0.100 M ammonia. How much concentrated (14.8 M) ammonia does he need?
3. Determine the freezing point of a solution containing 50.0 g of sucrose dissolved in 750. g water; round to the nearest 0.01°C. (Kf for water is 1.86°C/m, and a molar mass of sucrose is 342.3 g/mol.)
4. Explain why I cannot soft drink would be expected to fizz much more when opened at the peak of Mt. Everest (P ATM equals 260 TORR) then when open at sea level (P ATM equals 750 TORR)
2. A chemist needs to repair 2.50 mL of 0.100 M ammonia. How much concentrated (14.8 M) ammonia does he need?
3. Determine the freezing point of a solution containing 50.0 g of sucrose dissolved in 750. g water; round to the nearest 0.01°C. (Kf for water is 1.86°C/m, and a molar mass of sucrose is 342.3 g/mol.)
4. Explain why I cannot soft drink would be expected to fizz much more when opened at the peak of Mt. Everest (P ATM equals 260 TORR) then when open at sea level (P ATM equals 750 TORR)
1. at 20°C, The rate of a particular reaction is 0.001 M/s; what is the rate expected to be at 60°C, assuming all other factors remain the same?
2. Two compartments, labeled A and B, are separated by semipermeable membrane. What happens if the compartment A is filled with honey (a solution of sugar dissolved in water) and apartment B is filled with distilled water?
3. Which statement best explains why the following reaction is not likely to occur in a single step? 2C6H6(1)+15 O2(g)---> 12 CO2(g) + 6 H2O(g)
A. Exothermic reactions typically require several steps.
B. Gases do not usually react directly with liquids or solids.
C. The 17-body collision required is extremely unlikely.
D. The reaction is spontaneous and is not reversible.
2. Two compartments, labeled A and B, are separated by semipermeable membrane. What happens if the compartment A is filled with honey (a solution of sugar dissolved in water) and apartment B is filled with distilled water?
3. Which statement best explains why the following reaction is not likely to occur in a single step? 2C6H6(1)+15 O2(g)---> 12 CO2(g) + 6 H2O(g)
A. Exothermic reactions typically require several steps.
B. Gases do not usually react directly with liquids or solids.
C. The 17-body collision required is extremely unlikely.
D. The reaction is spontaneous and is not reversible.
The Half life period for catalytic decomposition of AB3 at 50mm is found to be 4 hours and at 100mm it is 2 hours. the order of reaction is ?
A determination calls for 125cm3 of glacial acetic acid .what mass of the acid is equivalent to the required volume
a)20.8g
b)62.5g
c)116.8g
d)132.3
a)20.8g
b)62.5g
c)116.8g
d)132.3
