How many moles are in 4.3 x 10^22

Write the formula for the binary compound that decomposes to the products H2 and Br2

What is an element? select one: a. two or more atoms held together by chemical bonds b. a chemical that cannot be broken down or separated into other chemicals c. a chemical that can be broken down or separated into other chemicals d.

What evidence is there that indicates ink is a mixture?

Erosion occurs when natural forces alter a landscape. What does it mean to alter a landscape w

What are the reactants and products when butane combusts with excess oxygen?

How many moles of liquid water must freeze to remove 100 kJ of heat? (ΔHf = - 334 J/ g.

What is the power of a kitchen blender if it can perform 3750 joules of work in 15 seconds?

A 75.00 g a sample of a substance is analyzed and found to consist of 32.73 g phosphorus and 42.7 g oxygen. calculate the percent composition of this substance.

Which one of the following melts the fastest: rectangular prism, cylinder, and rectangular trapezoidal trough?

A 1.8-mL volume of seawater contains about 4.0 * 10^-10 g of gold. The total volume of ocean water is about 1.5 * 10^21 L. Calculate the total worth of all the gold in the world's oceans if the price of gold is $19.