Questions by Qingfei Yuan

Questions by Qingfei Yuan

I inserted a picture so it can be more clear. This is for Algebra 2, Unit 2

asked Nov 11, 2023

1 answer

1 vote

8.4k views

Could CaCl2 melt ice at -20°C? Assume that the solubility of CaCl2 at this temperature is about 50.0 g/100.0 g of H2O and that the van 't Hoff factor for a saturated solution of CaCl2 is 2.50. (Kf for

asked May 27, 2023

1 answer

7 votes

11.7k views

Use the following information to determine cos(2x). cos(x)=3/5 and sin(x) is negative

asked Apr 11, 2023

1 answer

0 votes

50.4k views

14,219.92 The 9 in the ones place is _______ the value of the 9 in the tenths place.

asked Dec 9, 2022

2 answers

4 votes

133k views

A 42 cm long solenoid, 1.8 cm in diameter, is to produce a 0.030 T magnetic field at its center. If the maximum current is 4.5 A, how many turns must the solenoid have?

asked Oct 28, 2022

1 answer

7 votes

147k views

Which two dimensial shape can be roatated about one of its edges to create a cone

asked Apr 28, 2022

2 answers

1 vote

71.1k views

What does the declaration of independence say about equality.

asked Apr 17, 2022

1 answer

4 votes

129k views

Classify the energy sources as renewable or nonrenewable

asked Mar 2, 2022

2 answers

1 vote

46.3k views

Describe two things that would happen in an ecosystem if there were no unicellular organisms.

asked Jan 12, 2022

1 answer

0 votes

47.9k views

Help!! need to find the area

asked Jan 9, 2022

2 answers

5 votes

95.2k views

1. What was the population of Texas in 1836?

asked Jan 2, 2022

1 answer

19 votes

101k views

Select the correct answer. The length of the sides of a square is given by the expression 4.8x+ 24. Which expression represents the perimeter of the square? A B. C 4.8x+ 2.4 + 4 19,2x.2.4 B12.4x + 1.2)

asked Apr 20, 2021

1 answer

4 votes

159k views

What is earth science

asked Mar 27, 2021

1 answer

1 vote

223k views

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