Recent questions in Chemistry

Question

This is for my Chemistry class unit 10, 10.7, I need answers for about the shower curtain phenomenon. I needs answers like what gas law could explain it and so on.

Nesa asked Oct 13, 2024

by Nesa

7.9k points

1 answer

2 votes

91.7k views

Which of the following is a statement of the first law of thermodynamics? a. 1 cal = 4.184 J (exactly) b. ΔE = Efinal - Einitial c. Ek = 12mv² d. Energy lost by the system must be gained by the surroundings.

Alex Walker asked Oct 13, 2024

by Alex Walker

7.3k points

1 answer

5 votes

151k views

The threshold limit value, or TLV, of a chemical substance is________________________ A) the maximum level of a chemical to which a worker can be exposed without causing adverse health effects. B) the

Ukjent asked Oct 13, 2024

by Ukjent

8.3k points

1 answer

5 votes

120k views

Bromine spill: A few drops of bromine onto the benchtop. a) Provide immediate ventilation b) Clean with water and soap c) Use protective gloves and goggles d) Evacuate the area

Musso asked Oct 13, 2024

by Musso

7.8k points

1 answer

2 votes

232k views

How would oxygen be represented in the formula equation for the reaction of methane and oxygen to yield carbon dioxide and water? a. Oxygen b. O c. O₂ d. O₃

Geocrafter asked Oct 13, 2024

by Geocrafter

8.1k points

1 answer

5 votes

213k views

Which of the following indicate severely impaired oxygenation requiring high FIO₂ and positive end-expiratory pressure? 1. PAO₂-PaO₂ greater than 350 mm Hg on 100% O₂ 2. VC less than 10 mL/kg 3. PaO₂/FIO₂

Axel Stone asked Oct 13, 2024

by Axel Stone

7.7k points

1 answer

5 votes

188k views

How many molecules are in 4.2 grams of NaCl? Round to the hundredths place a) 3.01 X 10^23 molecules b) 1.20 X 10^24 molecules c) 7.82 X 10^23 molecules d) 2.69 X 10^24 molecules

Kevin Kaske asked Oct 13, 2024

by Kevin Kaske

8.1k points

1 answer

5 votes

42.0k views

Which choice is not an example of a molecule? Responses KOH uppercase K O H, Mn uppercase M lowercase n, O3 uppercase O subscript 3, H2S

Mcography asked Oct 13, 2024

by Mcography

8.5k points

2 answers

4 votes

39.2k views

How many moles of h2 are produced when 6.61 grams of cah2 and 5.16 grams of h2o react ?

Running Wild asked Oct 13, 2024

by Running Wild

7.5k points

1 answer

1 vote

190k views

Bismuth (Bi), oxygen (O2) water (H2O), and ammonia (NH3) are all examples of pure substances. Which of the following statements describe all pure substances? They can only be compounds? They cannot be

NEWAZA asked Oct 13, 2024

by NEWAZA

8.6k points

1 answer

2 votes

131k views

Following the general guidelines for effective use, which is the minimum water temperature for iodine to be an effective sanitizer at a concentration of 12.5 ppm? a) 55°F (13°C) b) 68°F (20°C) c) 75°F

Vladislav Gritsenko asked Oct 13, 2024

by Vladislav Gritsenko

7.9k points

1 answer

3 votes

54.3k views

Hard water, food particles, and incorrect water temperature can reduce the effectiveness of

Tocallaghan asked Oct 13, 2024

by Tocallaghan

7.8k points

1 answer

3 votes

210k views

Calculate the amount of heat required to boil 1530 g of water. The enthalpy of vaporization of water is ΔHvap=40.66 kJ/mol.

Secustor asked Oct 13, 2024

by Secustor

7.8k points

1 answer

2 votes

119k views

What do these two changes have in common? sauce burning on a stove making jam Select all that apply. A. Both are only physical changes B. Both are chemical changes C. Both are caused by heating D. Both

Meugiwara asked Oct 13, 2024

by Meugiwara

8.5k points

1 answer

5 votes

232k views

Calculate how many moles there are in the following: 1.1342 x 1022 molecules of CuBr2.

Pablo EM asked Oct 13, 2024

by Pablo EM

8.4k points

1 answer

4 votes

78.4k views

According to the following reaction, how many moles of aluminum oxide will be formed upon the complete reaction of 0.175 moles of iron(III) oxide with excess aluminum? 4Al+3O2→2Al2O3

GabAntonelli asked Oct 13, 2024

by GabAntonelli

8.0k points

1 answer

0 votes

216k views

The oceans take in carbon from the atmosphere and over time it

Mrogunlana asked Oct 13, 2024

by Mrogunlana

8.3k points

1 answer

2 votes

56.7k views

How will high ambient temperatures effect recovery?

Freefri asked Oct 13, 2024

by Freefri

8.4k points

1 answer

2 votes

172k views

How does the frequency of a string affect its wavelength?

Mohamed Thasin Ah asked Oct 13, 2024

by Mohamed Thasin Ah

8.4k points

2 answers

2 votes

357 views

6.00 g of NaOH are dissolved in water to make 5.00 L of solution. What is the concentration of hydronium ions, H30+ in this solution?

Yedpodtrzitko asked Oct 13, 2024

by Yedpodtrzitko

7.9k points

1 answer

4 votes

78.4k views

Page:

« prev
1
...
828
829
830
831
832
833
834
...
1000
...
next »

Ask a Question

Recent questions in Chemistry

Other Questions