Aluminium is a fairly reactive metal that often has a protective layer on due to oxidation

with air. This means it sometimes seems reluctant to react. Name the protective layer.

The times in the past when continental glaciers covered large parts of Earth's land surface were the What?

Question 5 Match each term to its description. Match Term Definition Excess reactant A) Reactant that can produce a lesser amount of the product Limiting reactant B) Reactant that can produce more of the product Theoretical yield C) Amount of

What is the number of known elements?

A compound is found to be 38.76% calcium, 19.97% phosphorous and 41.28% oxygen. What is the empirical formula for this compound?

Raising the temperature speeds up the rate of a chemical reaction by increasing? A. The effectiveness of collisions, only B. The frequency of the collisions, only C. Both the effectiveness and the frequency of the collisions D.

What kind or plate tectonic boundary is the san anfreas fault?

What is it called when the state of matter that keeps its shape and volume when it's placed in a different container

A 0.1 m solution of which salt is the most basic? (a) nano3 (b) naclo4 (c) nahso4 (d) nahco

How to conduct electricity with light bulb and battery

A cup can hold 50 ml of water and has a mass of 25g. If each penny weighs 2g, how many pennies can it hold before it sinks in fresh water? Explain how you got your answer.