Explain why it is important that there be no gaps around the edges of the filter paper

during a vacuum filtration.

Dough to which potassium bromate has been added rises better, producing a lighter, larger volume loaf.

7. How many moles of H3PO4 are there in 658 grams of H3PO4?

A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction ATP (aq) + H2O (l) ⟶ADP (aq) +

Write a balanced chemical equation describing the reaction of zinc and hydrochloric acid.

Your computer system loses power while you are working on a project for a very important client. When the computer restarts, you hear continuous beeps coming from your computer, and the monitor is showing no signal. What do the beeps mean? a.

Given the following reaction: 4Fe + 302 → 2Fe2O3 How many grams of Fe2O3 will be produced from 24.0 g of Fe and 5.00 g of O2? grams (round to three significant figures)

Which Group 16 element combines with hydrogen to form a compound that has the strongest hydrogen bonding between its molecules? 1. oxygen 2. selenium 3. sulfur 4. tellurium

How many hydrogen atoms are in 2.80 mol of ammonium sulfide?

What is a large oval structure that directs all of the cells activities?

HBr + H₂SO₄ SO₂ + Br₂ + H₂O What is the oxidation number of the oxidizing agent? What is the oxidation number of the reducing agent?