loganrstodola loganrstodola

10-05-2022
Chemistry

contestada

PLS HELP HURRYYYYY!!!!!!!

The half-life of a radioactive kind of protactinium is 27 days. How much will be left after 54
days, if you start with 488 grams of it?

Respuesta :

jsimpson11000 jsimpson11000

10-05-2022

Answer:

122 gm

Explanation:

54 days is 2 half lives : ( 27 * 2 = 54)

1/2 * 1/2 = 1/4 will be left

1/4 * 488 = 122 gm

Answer Link

Otras preguntas

You want to borrow three rock CDs from your friend. She loves math puzzles and she always makes you solve one before you can borrow her stuff. Here’s the puzzle

What does the second law of thermodynamics say about entropy?A. Only changes in entropy can be measured.B. Entropy cannot be created or destroyed.C. The entropy

A firm is using experience curve pricing when it prices high worldwide in an attempt to position itself as a market leader. A. True B. False

A gumball machine contains 23 green gumballs, 52 red gumballs, 34 blue gumballs 61 yellow gumballs, and 30 pink gumballs. What percentage of the gumballs are re

The labor cost to produce a certain item is $8.50 per hour. Job setup costs $50 and material costs are $20 per unit. The item can be purchased for $88.50 per un

You are an investor who wants to form a portfolio that lies to the right of the "optimal" minimum standard deviation portfolio on the efficient frontier. You mu

“It is well,” he said, turning resolutely on his heel. “I go now to make talk with the chiefs, so that they may know I am gone to show the Russians the way.” Wh

6PO2. In school of 900 studonts, it wasfound that 600 students participatein singing 500 studentsin dancing and 125do not participatein both the activities.part

A beam of light from a laser illuminates a glass how long will a short pulse of light beam take to travel the length of the glass.

what volume in liters of carbon monoxide will be required to produce 18.9 L of nitrogen in the reaction below 2co(g) + 2no(g) -> n2(g) + 2co2(g)