cheergirlpayton9952 cheergirlpayton9952

23-12-2022
Chemistry

Answered

the half life of a radioactive isotope is 500 million years. scietists testing a rock sample discover that the sampel contatins three times as many daughter isotopes. what is the age of that rock

Answer :

Other Questions

the half-life of the radium isotope ra-226 is approximately 1,599 years. what percent of a given amount remains after 800 years? round your answer to two decima

7. 0.352g of an unknown hydrate is heated until there is no further change in mass. the sample is then placed on a balance and the mass is found to be 0.184g. t

5.00 g sample of glucose is dissolved in some water and the solution is then diluted to exactly 0.025 l. what is the weight/volume % concentration of the soluti

What can we say about the temperature change of a sample of water when the value of q is negative? The temperature of the water increased. The temperature of th

what is the trend in the size of the band gap as you move down the column of the group 4a elements?

one of the factors that influences the rate of any chemical reaction is the collision rate of the reactants. a. identify the variables that influence the rate a

a 10 ml sample of hcl solution was transferred to an errenmeyer flask and diluted by adding about 40 ml of distille dwater. phenolphalein indicator was added, a

Look at the phase diagram of H2O in Figure 10.28 in the textbook, and tell what happens to an H2O sample when the following changes are made.The temperature is

a multiple dilution is performed on a sample with initial concentration of 1650 mg/dl. five tubes are used in the dilution. the sample is diluted 1/5 (tube 1),

The heat of combustion of liquid toluene (C7H8) is -3910.3 kJ/mol at 1 atm and 298 K. a) What is the energy of combustion at 1 atm and 298 K? b) What is the hea