Recent activity by Xiaojun

Recent activity by Xiaojun

Determine the number of moles of H in each sample. 1. 4.56 mol H2O 2. 7.86 mol NH3 3. 0.113 mol N2H4 4. 36.0 mol C10H22

asked Dec 10, 2023

1 answer 492k views

Which of the following is NOT used by forensic scientists to test for the presence of drugs in a human? a. blood b. hair c. skin cells d.saliva

asked Nov 17, 2023

1 answer 91.9k views

8. Harry has 3 bamboo poles of different lengths. The total combined length of the three poles when placed end-to-end is 47 inches long. Pole B is 12 times as long as Pole A and Pole C is 2 inches longer

answered Oct 7, 2023

1 answer 152k views

Can someone help me with this question

answered May 17, 2023

1 answer 34.8k views

Mrs. Smith bought 3 pies for her family dinner. There were 10 people eating dinner. How much pie did each person get?

asked May 17, 2023

1 answer 223k views

What is the simplest form of (x^2+5x-6) / (x^2+9x+18)? a) (x+2) / (x+6) b) 1/3 c) (x-1) / (x+3) d) -1/3

answered Apr 23, 2023

1 answer 7.3k views

The Phil price of an item is 4/5 the original price of the item is X.Which statement explains why both for 4/5 and 0.8x can find the sale price of the item?1. multiplying by 5/4 os the same as multiplying

answered Apr 14, 2023

1 answer 241k views

PLEASE HELP!! THANK YOU!

asked Mar 7, 2023

1 answer 422k views

What is the circumference of a circle (to the nearest whole number) whose diameter is 12?

asked Jan 28, 2023

2 answers 513k views

A dealer spent a total amount of $5250 for importing some cosmetics. If the total cost of the cosmetics was $5000 without tax, what was the percentage of import tax?

answered Dec 25, 2022

1 answer 338k views

El professor de arte es optimista.

asked Nov 23, 2022

1 answer 227k views

Order these numbers from least to greatest. 4.92, 9 25' -0.3, 24

asked Oct 2, 2022

1 answer 281k views

During photosynthesis the ______ from the sun is used to produce molecules of _____

answered Sep 30, 2022

1 answer 268k views

PLEASE HELP FOR MATH!!!!

asked Apr 15, 2022

2 answers 433k views

Marta's dog just had six puppies. Four are female (F), and two are male (M). One of the males is brown. Two of the females are brown. All puppies are either brown or white. If Marta randomly gives away

answered Feb 21, 2022

2 answers 319k views

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