# Tintin

Most popular questions and responses by Tintin
1. ## Chemistry

the equilibrium constant Kc for the reaction H2 + Co2 to H2O + CO is 4.2 t 1650°C initially .80 mol of H2 and 0.8 mol Co2 are injected into a 5.0 flask. Calculate the concentration of each species at equilibrium

2. ## chem

Quantitative analysis of soda ash by double indicator *why there is a need to boil distilled water in the preparation of base solutions? *why a mixture of NaOH and NaHCO3 is incompatible? *why there is a need t o boil the solution before reaching the

3. ## math

Suppose that 7 knights and 4 ladies are to be seated at a round table. Find the number of ways this can be done in each of the following cases: a) There are no restrictions; b) No 2 ladies are adjacent; c) The 4 ladies form a single block

4. ## Math

Ali has a rectangular pool around which he wants to construct a fence. The pool is 10 m long and 6 m wide, and he wants the fence to be 2 m from the edge of the pool on all sides. How many metres of fencing will he need

5. ## Math

A basket contains 12 mangoes and 10 santol fruits. joey chooses a mango or a santol. Then Jenny chooses a mango and a santol. For what choice of Joey will Jenny have a greater number of choices?

6. ## math

Ten distinct noncollinear points are chosen on a plane. a) How many line segments can be formed by joining any two of these points?

7. ## college

why a weight reading is considered constant when the last two consecutive weights are within 0.0003g?