Why might people add a base to an acidic lake?

O

to decrease the algae

O

to control the fish population

O

to neutralize the acid

O

to dispose of excess industrial waste

Calculate the energy required to heat 322.0g of ethanol from - 2.2°C to 19.6°C. Assume the specific heat capacity of ethanol under these conditions is 2.44·J·g-1K-1. Round your answer to 3 significant digits.

If 3.0Ã-105 j of heat are added to the ice, what is the final temperature of the system?

Many protists are single-celled organisms. Which other characteristic is common to organisms in Kingdom Protista? They thrive in wet environments. They thrive in environments with little sunlight. They thrive in environments without water.

Gallium arsenide, GaAs, has gained widespread use in semiconductor devices that convert light and electrical signals in fiber-optic communications systems. Gallium consists of 60.% 69Ga and 40.% 71Ga.

Which mammal below lays tough leathery eggs? A) bear (placental) B) duck-billed platypus (monotreme) C) kangaroo (marsupial) D) bat (placental)

A compound consists of 65.45% C, 5.492% H, and 29.06% O on a mass basis and has a molar mass of 110 g/mol. Determine the molecular formula of the compound.

What is thermal energy? a: the average overall volume of a system b: the total number of molecules in a system c: the kinetic energy of particles in a system d: the measure of temperature in a system

Oxygen at 150 k and 41.64 atm has a tabulated specific volume of 4.684 cm3/g and a specific internal energy of 1706 j/mol. calculate the specific enthalpy of o2 in this state.

How many valence electrons does a neutral lanthanide atom have?

What is observed when a solution of potassium iodide is added to silver nitrate solution? a) No reaction takes place (b) White precipitate of silver iodide is formed (c) yellow precipitate of Agl is formed (d) Agl is soluble in water.