Antoine Lavoisier is known for which of the following? (Select all that apply)

a. the theory of general relativity

b. the theory of natural selection

c. the law of conservation of mass

d. studying gravity

e. discovering oxygen

Determine the specific heat of a mayterial if a 35g sample of the material absorbs 48J as it is heated from 298K to 313K

Which of the following is not a correct chemical equation for a double replacement reaction? 2 HNO3 + Mg (OH) 2 yields 2 H2O + Mg (NO3) 2 H3PO4 + 3 NaF yields 3 HF + Na3PO4 2 KNO2 + BaSO4 yields K2SO4 + Ba (NO2) 2 Ca + 2H2O yields Ca (OH) 2 + H2

What would you study with a transmission electron microscope?

Genetic diversity is crucial to a species chance of survival over generations true or false?

A compound is found to contain 6.360 % silicon, 36.18 % bromine, and 57.46 % iodine by mass. what is the empirical formula for this compound?

What is the percent by mass of nahco3 in a solution containing 10 g of nahco3 dissolved in 400 ml of h2o?

Consider the reaction: 2clf3 (g) + 2nh3 (g) → n2 (g) + 6hf (g) + cl2 (g) when calculating the δh°rxn, why is the δhf° for n2 not important?

12.5 g of copper are reacted with an excess of chlorine gas, and 25.4 g of copper (II) chloride are obtained. Calculate the theoretical yield and the percent yield.

Section 20.1 the meaning of oxidation and reduction answer key

How did fossil fuels come about? inorganic materials beneath the sea the remains of plants and animals millions of years old only dinosaur fossils sedimentary rocks on the tops of mountains