subject

Chemistry, 23.10.2020 22:50 marieminnerly1628

A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope. How many half-lives have passed since the sample originally formed?

ansver

Answers: 1

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 18:00

Which three statements represent the benefits of performing experiments using computer simulations?

Answers: 3

question

Chemistry, 23.06.2019 09:10

A155.0 9 piece of copper at 182 °c is dropped into 2500 g of water at 23.9 °c. (the specific heat of copper is 0.385 1/9°c.) calculate the final temperature of the mixture. (assume no heat loss to the surroundings.)

Answers: 2

question

Chemistry, 23.06.2019 14:00

Which is not true regarding reaction rates? (2 points) catalysts are not used up in the reaction. catalysts speed up reactions by lowering the activation energy. reaction rates decrease as the concentration of reactants decrease. during reactions, concentrations of all reactants decrease at the same rate.

Answers: 1

question

Chemistry, 23.06.2019 19:10

Acar parked on level pavement exerts a force of 10,000 newtons on the ground. what force does the pavement exert back on the car? (f = ma, g = 9.81 m/s2)

Answers: 3

You know the right answer?

A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isoto...

Questions

question

Spanish, 19.09.2019 06:00

¿te interesa caminar un día el camino de santiago? ¿por qué o por qué no?...

question

Mathematics, 19.09.2019 06:00

2. a deck of game cards each have a different shape on them. twelve have a diamond, 8 have a square, and 5 have a circle. what is the

question

English, 19.09.2019 06:00

Vittles and vigilance summarize, "a year down yonder" could someone summarize this...

question

Mathematics, 19.09.2019 06:00

Find the errors what equation do you get when you solve each equation for x

question

Social Studies, 19.09.2019 06:00

Which direction is the atlantic ocean, relative to the north america coast...

question

Biology, 19.09.2019 06:00

Which of earth's parameters would be affected by a change in its rotational speed? a. temperature b. pressure c.

question

Mathematics, 19.09.2019 06:00

Evaluate each expression using the given graph of f(x). enter dne if the limit or value does not exist. i need on letter "d"

question

Chemistry, 19.09.2019 06:00

3. give one example of an element and one example of a compound. explain how they are different....

question

Biology, 19.09.2019 06:00

The experimental set up shows the change in the color after copper sulfate crystals are put into a beaker of water. observations verify that a) partic...

question

Mathematics, 19.09.2019 06:00

The sons of liberty were formed in order to protest what?...

question

Mathematics, 19.09.2019 06:00

Ineed : ( evaluate the difference quotient in the given function

question

Mathematics, 19.09.2019 06:00

Find the errors what equation do you get when you solve each equation for x

question

Mathematics, 19.09.2019 06:00

What is 10y +(23-10y)= what is the answer plz...

question

Mathematics, 19.09.2019 06:00

Triangle a b c with centroid g is shown on an x and y-axis. lines are drawn from each point through the centroid to the opposite side to form line seg...

question

Mathematics, 19.09.2019 06:00

Layla works in the shipping department of a toy factory that makes radio-controlled helicopters. small helicopters weigh 1 kilogram each, and ar...

question

Biology, 19.09.2019 06:00

Sandy just got a job working at the krusty krab washing the grill when spongebob leaves. she has realize the girll gets really very dirty and can be p...

question

Mathematics, 19.09.2019 06:00

46. solve: 0.45(y + 3) = -0.9[a] y=-5[b] y=-8.67[c] y=5[d] y = 1...

question

Mathematics, 19.09.2019 06:00

What is the value of x to the nearest degree?

question

Mathematics, 19.09.2019 06:00

2fuis for f(x) = 3x +1 and g(x) = x2 - 6, find (f - g)(x). o a. -x+3x+7 b. -82+3x - 5 o c. 3x2 - 17 o d. x² – 3x-7...

question

English, 19.09.2019 06:00

Which is the best summary of this passage? a. the first step to building a campfire is to choose a good location. b. to build a campfire, clear an ar...

More questions: Chemistry Another questions