How many molecules of water can be made from 200 molecules of hydrogen and 200 molecules of oxygen

What is the composition of the black powder in a firework?

A student prepares a model of multicellular organisms which statement best explains the difference between tissues and organs answers are A.) organs are composed of two or more cells and tissues are composed of one cell B.

Which word equation represents a neutralization reaction? * base + acid salt + water base + salt → water + acid salt + acid base + water salt + water → acid + base

If the goal is to create 0.50 L of a 1.7 M KBr solution, how many grams of KBr will be needed?

Why does the sun appear to move from east to west across the sky? A. Due to Earth's revolution B. Due to Earth's rotation C. Due to the sun's revolution D. Due to the sun's rotation

If enough heat is added to a substance, electrons begin to separate from the atomic nuclei. Which process does this describe? A. A solid turning into a liquid B. A plasma turning into a gas C. A gas turning into a plasma D.

What is the percent of H2O in a sample of a hydrate whose mass is 1.1290 g if the mass of water in the sample was 0.1660 g?

Why does conduction occur in solids and liquids easier compared to gases? Because the particles in gases are closer together and move slower Because the particles in gases are farther apart and move faster.

Write a balanced equation for the combustion of gaseous methane (CH4), a majority component of natural gas, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water.

Pedro listed characteristics of two types of protists in a chart. Two Groups of Protists X Y Often multicellular Are usually autotrophic Include euglenoids Are heterotrophs Reproduce using spores Include different molds Which headings best complete