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

A factory makes Jars in batches of 160 and lids in batches of 216. The next puts the jars in a row, fills them and then attaches the lid. They want to make the largest row possible so the jars and lids

asked Jan 21, 2021

1 answer

3 votes

176k views

Which of the following questions about the flu is a scientific question? A. Is a flu shot effective in preventing the flu? B. Is public fear of the flu out of control? C. Is the benefit of drugs for the

asked Jan 16, 2021

2 answers

0 votes

199k views

Multiple Choice. Select the correct answer for the following question: ¿Qué vas a hacer esta noche? Esta noche va a bailar. Van a bailar Vamos a estudiar esta noche. Voy a comer

asked Jan 8, 2021

2 answers

4 votes

59.1k views

How did the 19th amendment gain approval from the public and eventually get the votes needed to become a part of the constitution?

asked May 27, 2020

1 answer

5 votes

83.3k views

What issue in political important to you ?

asked Feb 23, 2020

1 answer

5 votes

168k views

Anna is planning a big birthday bash for her sixteenth birthday party and wants to invite as many people as possible but she has a limit! If the caterer she uses charges a $100 setup fee and $6.50 per

asked Oct 13, 2019

1 answer

3 votes

15.4k views

Menthol is an organic compound that can be made synthetically or extracted from peppermint or other mint oils. Substances that contain menthol can often be distinguished by its unique smell. What would

asked Sep 18, 2019

2 answers

1 vote

115k views

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