A certain ore is 33.0% nickel by mass. How many kilograms of this ore would you need to dig up to have 25.0 g of nickel?

Put the pairs of atoms in order, with the pair that has the biggest electronegativity difference between the two atoms at the top of your list. Phosphorus and lithium Chlorine and cesium Aluminum and oxygen Bromine and bromine Oxygen and strontium

If the Earth's inner core is so hot, then why isn't it molten rock?

The molecule CH20 contains two single bonds and one double bond. True False

When a lamp is turned on, only about 10% of the energy is transformed into light. What happens to the rest of the energy? A. The remaining energy is destroyed B. Energy that is not transformed into light becomes thermal energy C.

What type of reaction is BaCl2 + Na2SO4 → 2NaCl + BaSO4?

Define and explain bond energy.

A colorless, toxic, radioactive gas is called what

Making observations is the first step in the scientific method. Why don't scientists stop with the first step when creating an experiment? A.

Brass is an example of

A molecule has four bonded atoms around a central atom. The central atom does not have any lone pairs of electrons. What is the geometry of the molecule? Bent Linear Trigonal planar Tetrahedral