Descibe the probable causes of two mass extinctions.

What is the balanced equation for the combustion of magnesium?

The Venus flytrap is a plant that lives in wetland ecosystems that do not have nitrogen-rich soils. To make up for the lack of nitrogen in the soil, this species captures insects and digests them to obtain the nitrogen it needs.

In the reaction 2 blank 2Pb+O2 the missing species is (1) PbO (2) PbS (3) PbO2 (4) PbS4

Consider the following reaction, which is carried out at 300 K: CH3CH2OH + 3O2 → 2CO2 + 3H2O ∆H = - 1,235 kJ/mol and ∆S = + 0.22kJ/mol•K 1.) What is the value of ∆G? Show your work. 2.) Classify the reaction as spontaneous or nonspontaneous. 3.

A solution is prepared by dissolving 150 mL of ethanol in enough water to make a 500 mL solution. What is the percent by volume of ethanol in the solution? 10% 30% 70%

Reaction rate lab report

The absence of which cell structure would indicate a cell is prokaryotic?

When 0.880 g of an organic compound containing carbon, hydrogen and oxygen is burned completely in oxygen, 1.760 g of co2 and 0.720 g h2 o are produced. what is the empirical formula of the compound?

In ammonium chloride salt (nh4cl) the anion is a single chloride ion, cl. what is the cation of nh4cl

What does copper II sulfate do to the enzyme activity?