Recent questions in Chemistry

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can any of you help me with this question but in a form of a summary and it is science anyway so please help

Leonela asked Dec 28, 2024

by Leonela

7.5k points

1 answer

4 votes

124k views

A low pressure weather system comes into the city of Denver. The atmospheric pressure is 691mmHg. If 78.0% of dry air is nitrogen, what is the partial pressure of nitrogen in this low-pressure system?

Adrian Hall asked Dec 28, 2024

by Adrian Hall

8.6k points

1 answer

2 votes

180k views

If the pyruvate dehydrogenase complex is not working what products are produced?

IdeoREX asked Dec 28, 2024

by IdeoREX

8.2k points

1 answer

1 vote

36.5k views

A balloon is filled to a volume of 1.50 L with 2.50 moles of gas at 25 °C. With pressure and temperature held constant, what will be the volume of the balloon if 0.35 moles of gas are released? Incorrect,

Axay asked Dec 28, 2024

by Axay

7.2k points

1 answer

0 votes

155k views

Which classic experiment showed the existence of atomic nuclei?

Joe Daley asked Dec 28, 2024

by Joe Daley

7.4k points

1 answer

1 vote

16.0k views

Which of the following are properties of phospholipids I. They have a hydrophilic phosphate head II. they form a bilayer in water III. They are amphipathic IV. They have a hydrophobic fatty acid region

Ehud Lev asked Dec 28, 2024

by Ehud Lev

7.6k points

1 answer

4 votes

235k views

Your teacher has set up an unknown compound in your chemistry laboratory. Does the unknown compound likely have ionic or covalent bonds? Explain your reasoning. a) Ionic bonds, because it melts at 100°C.

Ed Bolton asked Dec 28, 2024

by Ed Bolton

8.2k points

1 answer

5 votes

121k views

The ______ of seawater reflects its salinity.

Kikea asked Dec 28, 2024

by Kikea

8.1k points

1 answer

5 votes

55.5k views

During the plateau phase voltage-gated Ca²⁺ and K⁺ ion channels are open, and voltage gated Na+ ion channels are closed. a. True b. False

Troy Turley asked Dec 28, 2024

by Troy Turley

8.3k points

1 answer

4 votes

63.5k views

According to the lab safety sheet, if you get treated "fish water" in your eyes you don't have to rinse them because the water used for fish is non-toxic.** A) True B) False

JasonB asked Dec 28, 2024

by JasonB

8.1k points

1 answer

2 votes

166k views

Which two commercially available AA solutions contain phosphate?

Alones asked Dec 28, 2024

by Alones

8.2k points

1 answer

5 votes

162k views

2. What is an element, and what makes elements unique? Date:

BeNerd asked Dec 28, 2024

by BeNerd

8.5k points

2 answers

2 votes

224k views

Consider the reaction of propane with oxygen. C₃H₈+5O₂⟶3CO₂+4H₂OCX₃HX₈+5OX₂⟶3COX₂+4HX₂O How many moles of CO₂COX₂ molecules are produced when 1.7 moles of O₂OX₂ molecules react completely?

Thewreck asked Dec 28, 2024

by Thewreck

7.6k points

1 answer

1 vote

30.0k views

What affects the tightness of the packing of phospholipids in a monolayer?

Felina asked Dec 28, 2024

by Felina

8.1k points

1 answer

5 votes

65.6k views

The reaction 2KClO₃(s) → 2KCl(s) + 3O₂(g) is a(n) a. Synthesis reaction. b. Decomposition reaction. c. Combustion reaction. d. Ionic reaction.

Evgenyt asked Dec 28, 2024

by Evgenyt

8.4k points

1 answer

4 votes

82.3k views

When zinc is heated redness in a current of steam,hydrogen gas is obtained.write an equation

Cbmeeks asked Dec 28, 2024

by Cbmeeks

7.8k points

1 answer

5 votes

18.5k views

Calculate the molar amount of KHP used to neutralize the NaOH solution.

Vance asked Dec 28, 2024

by Vance

8.8k points

1 answer

0 votes

208k views

10.0g of metal bar (80°C) dropped into 70g water (25°C) what is final temperature of water and metal? Sp metal = (0.451 J/(g°C)

Ludovico Fischer asked Dec 28, 2024

by Ludovico Fischer

9.2k points

1 answer

3 votes

81.9k views

Determine the heat (q) required to raise the temperature of 80.0 grams of metal from 28.0 °C to 53.0 °C. Assume the specific heat of the material is 0.8 J/g°C. Be sure to use proper labels, fill in all

Yclevine asked Dec 28, 2024

by Yclevine

7.5k points

1 answer

2 votes

233k views

If two atoms form a mostly covalent bond, what is the range of differences between their electronegativities?

Michael Eilers Smith asked Dec 28, 2024

by Michael Eilers Smith

7.7k points

1 answer

1 vote

139k views

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