What is starch test?

An excess of Ba (No3) 2 reacts with 250ml of H2SO4 solution to give 0.55g of BaSo4. determine The concentration in moles per litre of the Ba (No3) 2 solution?

What element has two electrons in the outer most shell

What is the voltage of an electrolytic cell with copper and magnesium electrodes? A. 2.71 V B. - 2.71 V C. 2.03 V D. - 2.03 V

Which of the following describes a spontaneous reaction?

Which of the following would be used to buffer vinigear a salt b flour c baking soda

What mass of H2SO4 is contained in 60.00 mL of a 5.85 M solution of sulfuric acid

One isotope has 6 protons and 8 neutrons which reference names this isotope

When an atom that has no charge loses two electrons, it becomes a: A: positive ion. B: negative ion. C: positive isotope. D: negative isotope.

A 155.0 9 piece of copper at 182 °C Is dropped into 2500 g of water at 23.9 °C. (The specific heat of copper is 0.385 1/9°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.)

Which state of matter is characterized by having an indefinite shape, but a definite volume? Gas Liquid Solid None of the above