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For each molecule of C₄H₈ that reacts, how many molecules of carbon dioxide and water are produced? 1) two carbon dioxide molecules and two water molecules 2) four carbon dioxide molecules and four water

Slawomir Dadas asked Oct 11, 2024

by Slawomir Dadas

8.9k points

1 answer

4 votes

32.5k views

Calculate the activation energy, QV, for vacancy formation in silver, given that the equilibrium number of vacancies at 1073°K is 3.6 x 1023 m ⁻³. The atomic weight and density (at 1073°K) of silver are,

Baccandr asked Oct 11, 2024

by Baccandr

8.0k points

1 answer

3 votes

27.6k views

Which is the electron configuration for zinc? A) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 B) 1s2 2s2 2p5 3s2 3p6 4s2 3d10 C) 1s2 2s2 2p6 3s2 3p6 4s13d10 D) 1s2 2s2 2p6 3s2 3p6 4s2 3d8

Ryall asked Oct 11, 2024

by Ryall

8.9k points

1 answer

4 votes

188k views

What's the mass of 75,000 oxygen molecules expressed in a scientific notation? 1 oxygen molecule= 5.3 x 10 to the power of -23.

Andriy Kondzolko asked Oct 11, 2024

by Andriy Kondzolko

8.2k points

1 answer

4 votes

147k views

Which of the following is most likely to produce a loud echo? Explain your answer. (Use science terminology) A) talking in a furnished, carpeted room B) singing in a tiled shower C) yelling across an open

Fredrika asked Oct 11, 2024

by Fredrika

7.7k points

1 answer

2 votes

205k views

Perform the following conversion ( write answers with correct number of significant figures): 3.56 cm to m

Yermy asked Oct 11, 2024

by Yermy

8.3k points

1 answer

3 votes

78.3k views

In the atom, which particles give the element its identity (atomic number)?

Alex Marchant asked Oct 11, 2024

by Alex Marchant

8.7k points

1 answer

2 votes

34.4k views

Write the chemical symbol to identify of the following element: "Oxygen" A) O B) Ox C) Oz D) Oxg

Xiiryo asked Oct 11, 2024

by Xiiryo

8.3k points

1 answer

4 votes

129k views

Bromine is found in group 17 and period 4. What does this tell you? A. It has 7 valence electrons and 4 electron shells. B. It has 17 valence electrons and 4 electron shells. C. It has 4 valence electrons

Naryl asked Oct 11, 2024

by Naryl

8.7k points

2 answers

3 votes

2.4k views

What kind of bond is in the picture

Achref asked Oct 11, 2024

by Achref

7.6k points

1 answer

4 votes

194k views

What two things can be correlated with the amount of product formed which is found from the spectrophotometer reading?

Anish Bhatt asked Oct 11, 2024

by Anish Bhatt

9.1k points

1 answer

3 votes

184k views

Indicate the concentration of each ion or molecule present in the following solution. A mixture of 45.0 mL of 0.272 M NaCl and 65.0 mL of 0.0247 M (NH4)2CO3 . Assume that the volumes are additive. Express

Flaviut asked Oct 11, 2024

by Flaviut

7.7k points

1 answer

4 votes

47.5k views

Only non acetone polish removers should be used with?

Matthew Walker asked Oct 11, 2024

by Matthew Walker

8.5k points

1 answer

3 votes

93.4k views

HELP A student in today's experiment produces 2.538 g of pure aspirin product. If commercial aspirin pills contain 325 mg of aspirin per pill, how many pills could be manufactured from the student's 2.

Arkantos asked Oct 11, 2024

by Arkantos

8.4k points

1 answer

5 votes

215k views

A sample of rainwater has a pH of 5.30. What is its hydronium-ion concentration? options: a. 4.9 x 10–6 mol/L b. 5.0 x 10–6 mol/L c. 5.5 x 10–5 mol/L d. 5.3 x 10–5 mol/L

Pseudoku asked Oct 11, 2024

by Pseudoku

8.3k points

1 answer

3 votes

107k views

3 moles of Mg(OH)2 are used to make a 0.5 L solution. What is the molarity of this solution?

Ankit Pundhir asked Oct 11, 2024

by Ankit Pundhir

8.3k points

1 answer

1 vote

181k views

A 30-year-old woman reports 2 years of persistently depressed mood, accompanied by loss of pleasure in all activities, ruminations that she would be better off dead, feelings of guilt about bad things

Luis Paulo Pinto asked Oct 11, 2024

by Luis Paulo Pinto

7.2k points

1 answer

4 votes

214k views

Aspirin (acetylsalicylic acid) is prepared by heating salicylic acid, C₇H₆O₃, with acetic anhydride, C₄H₆O₃. The other product is acetic acid C₂H₄O₂; according to the following reaction: C7H₆O₃ + C₄H₆O₃

Ata Mohammadi asked Oct 11, 2024

by Ata Mohammadi

7.8k points

1 answer

4 votes

211k views

Write the formula for the conjugate acid of each of the following: a. HSO₃⁻ b. F⁻ c. PO₄³⁻ d. CO

Jwodder asked Oct 11, 2024

by Jwodder

8.6k points

1 answer

1 vote

110k views

The equilibrium constant is given for one of the reactions below. Determine the value of the missing equilibrium constant. H₂ (g) + Br₂ (g) ⇌ 2 HBr (g) Kc= 3.8 × 10⁴ 4 HBr (g) ⇌ 2 H₂ (g) + 2 Br₂ (g) Kc=

Robert TuanVu asked Oct 11, 2024

by Robert TuanVu

8.4k points

1 answer

5 votes

65.8k views

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