Questions by Isaac Urbina

Questions by Isaac Urbina

How many grams of solid K2CO3 are needed to prepare 150. mL of a 0.50% by volume K2CO3 solution ?

asked Jun 11, 2020

1 answer

3 votes

59.8k views

A saline solution contains 1.6 % NaCl by mass.How much NaCl is present in 57.2 g of this solution?

asked Jun 8, 2020

1 answer

5 votes

131k views

Brad sold candy bars and cookies for a fundraiser at school. Candy bars sold for $3, and cookies sold for $5. He sold a total of 20 items and made $76. How many candy bars did Brad sell? 12 14 16 18

asked Sep 5, 2019

1 answer

4 votes

133k views

How did Rosa Parks become an icon for the civil rights movement?

asked Sep 3, 2019

2 answers

1 vote

118k views

What is the name for dna segments transcribed into mrna and coded for specific amino acids?

asked Mar 17, 2018

1 answer

2 votes

207k views

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