Questions by Melv

Questions by Melv

To make oxygen free the copper is heated in an atmosphere of hydrogen. Explain how this will remove the oxygen.

asked Aug 25, 2023

1 answer

5 votes

59.3k views

Answer for points and a thanks

asked May 2, 2023

1 answer

2 votes

179k views

Five questions historians ask to investigate the past are ___ what, where, when, and why.

asked Apr 14, 2023

2 answers

7 votes

140k views

(Compound) Probability: Rolling a die and getting a number other than 4 twice in a row. Pls help :'D

asked Dec 14, 2022

2 answers

2 votes

105k views

What is the smallest type of artery called? A. a capillary B. the aorta C. the apple

asked Dec 1, 2022

1 answer

11 votes

148k views

What kind of reaction is used for electroplating? O A. A nonspontaneous redox reaction B. A spontaneous redox reaction C. A precipitation reaction D. A decomposition reaction

asked Nov 4, 2022

1 answer

15 votes

113k views

- a) write the formula unit of calcium fluoride. b) A certain mass m of calcium fluoride contains 1.2*1023 anions. Deduce the mass (m). NA= 6.02*1023

asked Sep 22, 2022

1 answer

0 votes

76.7k views

Combine like terms Show all steps 9(k+3) = 27

asked Aug 10, 2022

2 answers

2 votes

121k views

1) lucy is playing a game where she has to roll a fair number cube with faces labeled from 1 to 6 . what is the probability that she will roll either a 3 or a 4 on her next roll? a) 4/6 b) 2/6 c) 3/6 d)

asked Aug 10, 2022

2 answers

4 votes

136k views

Someone help me solve these three math year7 questions , thank you

asked Apr 9, 2022

1 answer

15 votes

201k views

What is algebraic equation

asked Jan 18, 2022

2 answers

2 votes

37.1k views

Read the section of the article named "Duties." Which selection from the section shows a way that advertising managers get customers interested in a product or service? Question 1 options: Some advertising

asked Oct 9, 2021

1 answer

2 votes

9.4k views

what feature of the celestial sphere is found by essentially expanding the Earth's equater outward to the celestial sphere

asked Feb 28, 2021

1 answer

5 votes

26.8k views

Which equation represents a line that passes through (-9, -3) and has a slope of -6? ОО y-9 = -6(x-3) y + 9 = -6(x + 3) O y-3 = -6(x-9) O y + 3 = -6(x + 9)

asked Jan 8, 2021

1 answer

2 votes

139k views

A a squirrel ran 9 miles in one hour. which expression can be used to determine its speed in miles per hour?

asked Nov 28, 2020

1 answer

1 vote

113k views

Help please I am confused

asked Oct 21, 2020

1 answer

5 votes

173k views

Calculate the new area using a scale factor of 3.

asked May 23, 2020

1 answer

1 vote

135k views

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