heypeoplelol heypeoplelol

04-06-2021
Mathematics

contestada

In two half-lives, how much of a 400-gram sample of a radioactive element will remain un-decayed?

Respuesta :

Аноним Аноним

04-06-2021

Answer:

100 grams

Step-by-step explanation:

1/2 * 1/2 = (1/2)² = 1/4

1/4 * 400 = 100

Answer Link

Otras preguntas

Janette bought a portable CD player on sale. The regular price was $100. She was charged $89. a) What percent of the regular price did Janette pay? b) What perc

Why was nature so important to Anne Frank? (The Diary of Anne Frank) Please help!!!

Who was the African-American who called the war with Mexico disgraceful and cruel? Why?

The square of a certain negative number is equal to 5 more than one half of the number what is the number

1. What is the empirical formula for a compound containing 63.8% N and 36.2% O? a. N₂O₅ b. N₂O₃ c. NO₂ d. NO e. N2₂O

what type of monkey starts with an h?

A rectangle whose perimeter is 80 m has an area of 384 m^2. Find the dimensions of the rectangle.

find the sum of 3b/b+2 and 12/b+2 and express it in simplest form

Name two things found in a plant cell that are not found in an animal cell.

shayla says that one kilometer is equal to one million millimeters. is She correct? explain why?