Questions by Xiangkun

Questions by Xiangkun

The half life of a new isotope found on Mars is 2 years. It takes 10 years to get the sample back to Earth. If the astronauts started with 128g of this new isotope how much is left when they get back to

asked Jun 10, 2021

1 answer

2 votes

124k views

3) What is the constant/control of an experiment?

asked Jun 9, 2021

1 answer

3 votes

43.7k views

What did Sir Isaac Newton discover about color? -

asked Mar 24, 2021

1 answer

5 votes

195k views

Jada has 7 pink roses and some white roses. She gives all of them away: 5 roses to each of her 3 favorite teachers. How many white roses did she give away?

asked Feb 13, 2021

1 answer

2 votes

135k views

What is in the central region of Argentina? Explain. Pampas Gran Chaco plateaus mountains

asked Feb 11, 2021

1 answer

4 votes

24.7k views

How does Ernesto Galarza make distinctions between his new school and his old school in Barrio Boy? He notes that people speak English at his new school; they spoke Spanish at his old school. He states

asked Sep 14, 2020

2 answers

1 vote

49.0k views

-2(3x-4)+0.5(12x-4)

asked Sep 11, 2020

1 answer

0 votes

135k views

An example of an atom that has no charge is one that has O A. 3 protons, 1 electron, and 3 neutrons. O B. 3 protons, 2 electrons, and 1 neutron. O C. 1 proton, 2 electrons, and 3 neutrons. O D. 2 protons,

asked May 26, 2020

1 answer

0 votes

228k views

Pauline travels between two cities. first she drives for 45 minutes at an average speed of 85 km/hr then for 16 minutes at an average speed of 118 km/hr, then she spends 19 minutes eating lunch and buying

asked Sep 15, 2019

1 answer

3 votes

53.9k views

List all of the factors for the number 8. is 8 a prime or composite number thank you

asked Aug 22, 2019

2 answers

0 votes

226k views

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