A sample of a compound contains 32.0 g c and 8.0 g h it’s molar mass is 30 G / Mol what is the compounds molecular formula?
State whether the following changes are physical or chemical and state your reason for your choice. P or C These are the ones I’m confused on. 2. Sulphur is burned 3. Gasoline explodes 4. A match is struck 5. Mercury is heated to produce mercury vapour 6. Copper sulphate dissolves in water 10. Silver tarnishes […]
The value of δg°’ for the conversion of glucose-6-phosphate to fructose-6-phosphate (f6p) is 1.67 kj/mol. if the concentration of glucose-6-phosphate at equilibrium is 1.95 mm, what is the concentration of fructose-6-phosphate? assume a temperature of 25.0 °c
How many grams of NaCl must be added to 250 g of water to lower the vapor pressure by 1.30 mmHg at 40 ∘C assuming complete dissociation?
An industrial chemist studying bleaching and sterilizing prepares several hypochlorite buffers. find the ph of 0.300 m hclo and 0.250 m naclo. (ka for hclo = 2.9 × 10−8)
How much pressure in kpa does 2 moles of nitrogen gas at 55°c exert on a container that holds 63 l of gas?
Ea for the uncatalyzed reaction o3(g) + o(g) → 2 o2(g) is 14.0 kj. ea for the same reaction when catalyzed is 11.9 kj. what is the ratio of the rate constant for the catalyzed reaction to that for the uncatalyzed reaction at 26°c? assume that the frequency factor a is the same for each […]
A soap bubble had rainbow-colors and broke after forming a colorless part. What is the name of “colorless part”? Calculate its thickness as “a water film (n = 1.333) in air (n = 1)”. [*Visible range is 400 – 800 nm.]
A 50 L cylinder is filled with argon gas to a pressure of 10130.0 kPa at 300°C. How many moles of argon gas does the cylinder contain? (Given: R = 8.314 L∙kPa/K∙mol) 2519.142 mol
Which of the following units is likely to be used while calculating the distance between Venus and Earth? Astronomical units Days Kilometers per hour Miles per second
