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Which of the following is a chemical change A) Mixing chalkpowder with sand B) Melting of ice C) Dissolving sugar in water D) Cooking an egg

Zakiullah Khan asked Sep 7, 2023

by Zakiullah Khan

7.3k points

2 answers

20 votes

162k views

What is the h+ oh- and poh of solution with ph=3.67

Jifeng Zhang asked Sep 7, 2023

by Jifeng Zhang

8.4k points

1 answer

3 votes

193k views

What component separate the dissolved salts?

Hotel asked Sep 7, 2023

by Hotel

7.9k points

1 answer

19 votes

106k views

All isotopes of a given element must have the same

Lili asked Sep 6, 2023

by Lili

8.4k points

2 answers

1 vote

40.3k views

Which action will cause the tennis ball to move the farthest? You gently hit the tennis ball. You hit the tennis ball from another side to change its direction. You pull the tennis racket back and up and

Surikator asked Sep 6, 2023

by Surikator

7.1k points

2 answers

22 votes

97.9k views

exactly 4.0g of sulfur is burnt in a fume extraction cupboard. The sulfur is ignited in an excess of oxygen: S(s) + O2(g) ➔ SO2 a. What volume of gas will form in dm3 at rtp? b. What volume of oxygen will

Jaybeeuu asked Sep 6, 2023

by Jaybeeuu

8.0k points

1 answer

17 votes

196k views

Does an eclipse occur every time the moon is in the new or full moon phase?

Abhi V asked Sep 5, 2023

by Abhi V

8.5k points

1 answer

22 votes

224k views

1. Give 2 examples of what organisms compete for in an ecosystem.)

Nick Holden asked Sep 5, 2023

by Nick Holden

7.5k points

1 answer

19 votes

55.3k views

Help asap!! Predict the names of the salts that will form in the following reactions. sodium hydroxide + sulfuric acid Shape magnesium + hydrochloric acid

Asif Kamran Malick asked Sep 5, 2023

by Asif Kamran Malick

7.8k points

1 answer

25 votes

214k views

the change that takes place when two or more substances _______ to form new substances is called a chemical reaction

Rosaura asked Sep 4, 2023

by Rosaura

7.8k points

2 answers

6 votes

46.3k views

7. What is the molar mass of each of the following elements? a) helium, He(s) c) potassium, K(s) b) manganese, Mn(s) d) boron, B(s)

Pranathi asked Sep 4, 2023

by Pranathi

8.0k points

1 answer

8 votes

47.8k views

Predict the products of electrolysis of a solution of copper(II) sulfate if carbon electrodes are used instead of those made from copper as referred to in the purification of copper section of the electrolysis

Pbible asked Sep 4, 2023

by Pbible

7.8k points

1 answer

24 votes

103k views

Why is copper not usually used in over head electric cable

UnicornsOnLSD asked Sep 4, 2023

by UnicornsOnLSD

7.9k points

1 answer

19 votes

10.8k views

Which part of Earth most likely has the highest albedo value? A. smooth ocean ice when the Sun is at a 30-degree angle B. smooth ocean ice when the Sun is at a 15-degree angle C. choppy ocean water when

Ufopilot asked Sep 4, 2023

by Ufopilot

8.2k points

1 answer

22 votes

116k views

The neutron was discoverd by

Syclone asked Sep 3, 2023

by Syclone

8.1k points

1 answer

6 votes

173k views

In your own words, explain how a compound could experience a chemical change.

Jhauberg asked Sep 3, 2023

by Jhauberg

7.9k points

1 answer

23 votes

48.6k views

How can the actions of people affect runoff and absorption in a positive way? How do they affect them in a negative way?

NoseKnowsAll asked Sep 2, 2023

by NoseKnowsAll

8.4k points

1 answer

3 votes

149k views

I need help and am I on the right track?

Kevin Delord asked Sep 2, 2023

by Kevin Delord

7.3k points

1 answer

6 votes

112k views

Which of the following best explains why a drum makes a sound when hit by a stick? The drum skin vibrates the air. The drum skin gets hot and heats the air. The sticks vibrate when they hit the drum. The

Mostafa Fateen asked Sep 2, 2023

by Mostafa Fateen

8.2k points

2 answers

19 votes

32.2k views

What is the speed of a car that covers 250 miles in 5 hours?

Tilleryj asked Sep 1, 2023

by Tilleryj

7.7k points

1 answer

18 votes

227k views

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