Recent questions in Chemistry

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Not a timed or graded assignment. Please show all calculation work. Question prompt “what mass of the excess reactant HCI will be used”. Quick answer showing work = amazing review :)

Peter Burns asked Jul 5, 2023

by Peter Burns

4.1k points

1 answer

5 votes

232k views

Katrina tried to take pictures with her cell phone but discovered that its battery was dead. What happened to the battery? Only chemical energy remained stored in the battery. All its stored energy had

Daddywoodland asked Jul 5, 2023

by Daddywoodland

4.3k points

2 answers

10 votes

195k views

I will give 500 points! What is the composition of Milk?

Tom Gringauz asked Jul 5, 2023

by Tom Gringauz

3.8k points

2 answers

10 votes

96.7k views

A student pours 38.8 g of water at 5°C into a beaker containing 116.8 g of water at 5°C. The density of water at 5°C is 1.00 g/mL. (a) What is the final mass? g (b) What is the final temperature? °C (c)

Izlin asked Jul 5, 2023

by Izlin

4.4k points

1 answer

0 votes

99.6k views

Which of the following best describes supersaturation? A Water droplets begin to fall back to Earth from clouds. B Water vapor transfers back to water droplets or ice crystals. Small particles form and

Adrian Neatu asked Jul 5, 2023

by Adrian Neatu

3.5k points

1 answer

9 votes

194k views

At a temperature of 273K, a 400 mL gas sample has a pressure of 760 mm Hg. If the pressure is changed to 380 mmHg, at which temperature will this gas have a volume of 551mL?

Arrmansa asked Jul 5, 2023

by Arrmansa

3.7k points

1 answer

9 votes

103k views

Write one sentence defining elements and one sentence defining compounds.

Samlev asked Jul 5, 2023

by Samlev

4.0k points

2 answers

23 votes

58.7k views

Identify the atom below. a.) H b.) He c.) Bе d.) С

Daniel Ribeiro asked Jul 5, 2023

by Daniel Ribeiro

3.8k points

1 answer

5 votes

90.6k views

A chemist determines by measurements That 0.0300 moles of hydrogen gas participate in a chemical reaction. Calculate the mass of hydrogen gas that participates. Be sure your answer has the correct significant

Luke Vo asked Jul 5, 2023

by Luke Vo

4.7k points

1 answer

5 votes

85.8k views

Why does water boil at 100° Celsius while hydrogen sulphide boils at 58 degrees Celsius?

Scooby asked Jul 5, 2023

by Scooby

4.1k points

1 answer

14 votes

230k views

The Bay of Fundy in Nova Scotia, Canada is reported to have the largest tides in the world with high tide and low tide occurring two times per day. The tides can measure over approximately 50.0 ft in height.

Hanae asked Jul 5, 2023

by Hanae

4.3k points

1 answer

4 votes

59.1k views

After being ignited in a Bunsen burner flame, a piece of magnesium ribbon burns brightly, giving off heat and light. In this situation, the Bunsen burner flame providesA)ionization energyB)activation energyC)heat

Adray asked Jul 5, 2023

by Adray

3.6k points

1 answer

2 votes

41.5k views

Which describes how to calculate density? mass divided by volume volume divided by mass mass added to volume volume subtracted from mass

Margery asked Jul 5, 2023

by Margery

4.1k points

2 answers

17 votes

205k views

How many moles of water (H2O) would be produced from the reaction of 3 moles of hydrochloric acid (HCl) reacting with excess calcium hydroxide (Ca(OH)2)?

Mateja Petrovic asked Jul 5, 2023

by Mateja Petrovic

4.4k points

1 answer

14 votes

29.5k views

I need help with question May someone help me? Thank yo

RashadRivera asked Jul 5, 2023

by RashadRivera

3.5k points

1 answer

1 vote

133k views

Milk in a bottle has a mass of 442grams and a volume of 425cubic centimeters. Calculate its density. Write your answer to the hundredths place. gramspercubic centimeter

BoazGarty asked Jul 5, 2023

by BoazGarty

4.5k points

1 answer

14 votes

78.6k views

How many moles of potassium carbonate will be produced by the combination of 4.5 moles of potassium oxide with excess carbon dioxide?

Jon Nadal asked Jul 5, 2023

by Jon Nadal

3.9k points

1 answer

0 votes

108k views

What is one issue that managers did not face 50 years ago? A - motivating employees B - determining fair compensation C - globalization of the workplace D - determining efficient practices

Chantheman asked Jul 5, 2023

by Chantheman

3.9k points

1 answer

12 votes

61.6k views

I need help with the solution

Denis Alimov asked Jul 5, 2023

by Denis Alimov

4.0k points

2 answers

4 votes

81.6k views

The line N is at a wavelength of 590 nm. Calculate the frequency of this light in Hertz

Alexander Paramonov asked Jul 5, 2023

by Alexander Paramonov

4.1k points

1 answer

4 votes

12.4k views

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