Chemistry Answers

What is the concentration of ammonia that reacts with water to produce ions to the extent of 1.98 percent? ionization constant of ammonia is 1.81x10^-5

H3PO4 sample (M.Wt =98) if 0.5 M NaOH used as a titrant. find the concentration

H2O2 (aq) + 3 I-(aq) + 2 H+(aq) → I3- (aq) + 2 H2O (l)

In the first 59.1 seconds of the reaction, the concentration of I- decreased from 1.046 M to 0.364 M. 

What is sulphur

Does a precipitate form if you add 15.00 𝑚𝐿 of a 2.10 × 10−3 𝑚𝑜𝑙/𝐿 solution of lead (II) nitrate to 25.00 𝑚𝐿 of a 2.50 × 10−2 𝑚𝑜𝑙/𝐿 solution of potassium chloride? Justify your answer mathematically. (𝐾𝑠𝑝 𝑓𝑜𝑟 𝑙𝑒𝑎𝑑(𝐼𝐼)𝑐h𝑙𝑜𝑟𝑖𝑑𝑒 𝑖𝑠 1.7 × 10−5)

At 150K, bromine gas and chlorine gas combine to form gaseous bromine chloride. Determine the

𝐾𝑃 for the reaction if the partial pressures are as follows.

𝑃 = 1.67 𝑎𝑡𝑚 𝐵𝑟2

𝑃 = 1.42 𝑎𝑡𝑚 𝐶𝑙2

𝑃 = 0.061 𝑎𝑡𝑚

What volume (in mL) of 0.4050M calcium chloride reacts completely with 25.00mL of 0.2800M silver nitrate?

Compound A decomposes to compounds B and C on heating at 500 K according to the chemical equation: 2𝐴 + 𝐵 → 2𝐶 The reaction is first order and the rate constant is 2.17 x 10-5 s -1 . a) Calculate the fraction of A remaining after it has been heated for 30 minutes. b) What is the time (in minutes) required for 50% of the sample to be decomposed under the same conditions?

Predict the type of bond formed between cesium (Cs) and fluorine (F). The electronegativity value of Cs is 0.9, and F is 4.0.

Each of the first 3 cylinders has a volume of 5.0L. If the gases in all 3 cylinders below were combined into one cylinder with a volume of 5.0L at constant temperature, what would the total pressure be?