Which of these mixtures are heterogeneous? 1. brass (an alloy of copper and zinc) 2. granite (a type of rock with multicolor spots) 3. oil and water 4. salt and water

When 3.77 moles of sodium carbonate react with excess calcium phosphate, how many moles of product will be produced from this reaction?

A 30.60 g sample of a substance is initially at 25.6 °c. after absorbing 2811 j of heat, the temperature of the substance is 175.0 °c. what is the specific heat (c) of the substance?

A cosmetologist has an ethical duty to do which of the following?

The mass of the sun is 2 x 10 (30) kg, and the distance between Neptune and sun is 30 AU. What is the orbital period of Neptune in earth years

When a solution of NaI reacts with a solution of AgNO3, what is the net ionic equation? Na + (aq) + NO3 - (aq) → NaNO3 (s) Na (aq) + NO3 (aq) → NaNO3 (s) No reaction Ag + (aq) + Cl - (aq) → AgCl (s)

Name the following compounds. NH4OH

How many minutes will be required to deposit 1.00 g of chromium metal from an aqueous?

Does a gas discharge tube filled with boron emit the same wavelength

What is HNO3 it's formula

Which indicator would be the best to use for a titration between 0.10 m hcooh with 0.10 m naoh? you will probably need to consult the appropriate table in the book. 1. methyl red, color change at ph 3-5 2.