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If the pH of a substance is 4, what will the pOH be?
A lab analysis of 0.502 g of Scandium (Sc) reaction with Oxygen (O2) from Air resulted
in the formation of a metal oxide (MO) which had a mass of 0.768 g.
Find the empirical formula of this metal oxide → Sc?O?
calculate the heat required to boil 325 g of water
The reaction CO (g) + NO2 (g) → CO2 (g) + NO (g) is second order with respect to NO2 (g) and zero order with respect to CO (g) at temperatures less than 500K. (a) Write the rate law for the reaction. (b) How will the rate of the reaction change if the NO2 concentration is halved?
if I contain 3 moles of gas in a container with a volume of 60 liters and at a temperature of 400K, what is the pressure inside the container?
Consider a sample of calcium carbonate in the form of a cube measuring 5.093cm on each edge . If the sample has a density of 2.71g.ml^-1 . Calculate the number of moles of calcium carbonate .
2. Which of the following phenomena best illustrates Charles' Law?Explain your answer.
A. Carbon dioxide being dissolved in water B. Expansion of the balloon as it is being submerged in hot water
C. Breathing apparatus being used by a patient
D. Leavening agent causing the fluffiness of cake products
What is the specific heat of a substance if 2440 Joules are required to raise the
temperature of a 50g sample?
5g of NaOH and NaCL ( as impurity) were dissolved in 1dm3 of water. If 25cm3 of this solution were neutralized by 21cm3 of 0.1moldm3 HCL. Calculate the mass concentration of NaOH in gdm3.
At 30.0 K, a container has an unknown pressure. What is the new temperature if the pressure is decreased to 33% of the original?
