Lv 125 points

# jenny

• ### you need to solve for x:?

2 ^.1x -5 = 7

• ### you need to solve for x:?

log 4 x= -1

the four is lowered

• ### you need to solve for x:?

log 2 (x-4)=6

• ### you need to sove for x:?

log 2 x + log 2 (x-2)= 3

the both two's are lowered

• ### what is the domain of :?

y= log 3 x

the three is lower

• ### need help in chemistry?

a 419.0g sample of lead has an initial temperature of 31.2 degrees celsius. if it absorbs 1545.8 J of energy what is is final temperature?

• ### need help in chemistry?

suppose you had a 25g sample of air and 25g of silver. Each sample absorbs 325 J of energy. Which substances has the biggest change in temperature? do calcculations to prove your answer.

• ### need help in chemistry?

a 500.0g cup of water is removed form he microwave at 98.2 degrees celsius and is left on the counter to cool to 79.9 degrees celsius. how much heat is transferred from the cup to its surroundings. specific heat- water 4.184

• ### Need help in chemistry?

A piece of foam insulation found in a home has a density of .88g/cm3 and measures 90.0cm times 55.0cm times 6.0cm. How much heat would it need to absorb to warm from 33.0 degrees celsius to 40.0 degrees celsius? specific heat- foam insulation 1.7

• ### suppose 50.00ml of hydrofluoric acid is titrated with 38.9ml of 2.500M NaOH.?

what is the concentration of the acid?