The substance that would be expected to form a precipitate as a product of a chemical reaction is *
1 poi
1. silver hydroxide
2. calcium sulfide
3. sodium phosphate
4. chromium(III) sulfate
5. none
of the above
O 6. only 1 and 4

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?