An element has 2 isotopes. One isotope has a mass of 34.97g and has a percent abundance of 75.77%. The second isotope has a mass of 36.97g and a percent abundance of 24.23%. Calculate the atomic mass of the element. Name the element. (Show work, pls)

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon

Which method would be best to separate a mixture of sand and gravel