Recent questions in Chemistry

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How many moles are in 29.4L of liquid ethanol at STP?"

Rudy Hinojosa asked Oct 13, 2024

by Rudy Hinojosa

7.9k points

1 answer

1 vote

43.6k views

A sample of gas has an initial pressure of 740 mmHg and an initial volume of 32.0 L. If the volume is changed to 21.8 L, what is the new pressure? Assume temperature and amount remain constant

Etherton asked Oct 13, 2024

by Etherton

7.5k points

1 answer

4 votes

20.3k views

Which of the following measurements has two significant figures? a) 500 mL b) 26.59 km c) 2.3 cm d) 0.00355 g

Inamur Rahman asked Oct 13, 2024

by Inamur Rahman

8.1k points

1 answer

4 votes

224k views

Detail the dissolution of iron (II) hydroxide.

Binarymason asked Oct 13, 2024

by Binarymason

8.0k points

1 answer

3 votes

43.1k views

Name the classification of a substance or mechanism that has pain relieving properties.

James Bell asked Oct 13, 2024

by James Bell

8.1k points

1 answer

5 votes

92.0k views

Write the molecular, total ionic, and net ionic equations for the following reactions: (A) Ca(OH)2(aq) + HC2H3O2(aq) ⟶ (B) H3PO4(aq) + CaCl2(aq) ⟶

AmShaegar asked Oct 13, 2024

by AmShaegar

8.8k points

1 answer

3 votes

30.0k views

What reagent will react by addition to what unsaturated hydrocarbon to form this compound?

Arbel asked Oct 13, 2024

by Arbel

8.2k points

1 answer

0 votes

231k views

Which one of the following statements about ATP hydrolysis is not correct? A. ATP hydrolysis releases energy. B. ATP hydrolysis results in the formation of ADP. C. ATP hydrolysis is an endergonic reaction.

Sajuuk asked Oct 13, 2024

by Sajuuk

8.7k points

1 answer

2 votes

3.4k views

State how the relative molecular mass of a covalent compound is obtained from itsmass spectrum.

Zabir Al Nazi Nabil asked Oct 13, 2024

by Zabir Al Nazi Nabil

9.2k points

1 answer

0 votes

72.6k views

A 46.7 gram sample of Copper at 96.5°C is dropped into 85.1 g of cool water at 24.3°C. The water containing the Copper warms up to 27.7°C. How many calories does the metal lose?

TJR asked Oct 13, 2024

by TJR

8.2k points

1 answer

1 vote

135k views

The atoms are _____ combined in someway. Often times (but not always) they come together to form groups of atoms called ______. a) randomly; molecules b) chemically; ions c) temporarily; compounds d) ideally;

Dr Casper Black asked Oct 13, 2024

by Dr Casper Black

8.2k points

1 answer

5 votes

90.0k views

Calculate the pH of the following solutions (a) 0.05 M HCI (M)) (b) 0-1 M acetic acid (K₂ = 1.75 × 10-5 (M)) (c) 0-1 M aniline (Kb=3-82 x 10-¹0 (M)) (d) 0.1 M acetic acid plus 0-001 M HCI (e) 0.16 M acetic

Kwiksilver asked Oct 13, 2024

by Kwiksilver

8.0k points

1 answer

3 votes

94.8k views

6. A sealed flask filled with an ideal gas is moved from an ice bath into a hot water bath. The initial temperature is 273K and the final temperature is 350 K. The initial pressure is 100kPa. The volume

Hrvoje Miljak asked Oct 13, 2024

by Hrvoje Miljak

8.3k points

1 answer

3 votes

28.6k views

Because shells require it, land snails are limited to soils that contain some level of: a. Calcium carbonate b. Silica c. Iron d. Organic matter

ConfusedDeer asked Oct 13, 2024

by ConfusedDeer

8.0k points

1 answer

1 vote

21.4k views

Alcohols with higher molecular weights tend to be less water-soluble. a. True b. false

Chevonne asked Oct 13, 2024

by Chevonne

8.5k points

1 answer

4 votes

153k views

At standard pressure, which substance becomes less soluble in water as temperature increases from 10.°C to 80.°C? answer choices KCl HCl NaCl NH4Cl

Jthg asked Oct 13, 2024

by Jthg

7.6k points

1 answer

4 votes

212k views

What are the coefficients that would be needed to balance this equation? HgS + O2 → HgO + SO2.

Yoeri asked Oct 13, 2024

by Yoeri

7.8k points

1 answer

0 votes

128k views

Question The river flows through a field at an average rate of 0.455 cubic feet per second (ft³/s). What is the flow in liters per second (L/s)? What is the flow in liters per year (L/yr)?

Ajay Gautam asked Oct 13, 2024

by Ajay Gautam

8.7k points

1 answer

2 votes

111k views

What does the M+ peak tell you about a molecule? A) It indicates the molecular weight of the molecule. B) It provides information about the molecule's structure. C) It reveals the molecule's color and

Krishnan Sundaram asked Oct 13, 2024

by Krishnan Sundaram

8.0k points

1 answer

2 votes

16.2k views

If the dialysate solution is a 2.5% solution, it would have which of the following for osmolarity? A. 485 mOsm/l B. 296 mOsm/l C. 346 mOsm/l D. 396 mOsm/l

PW Kad asked Oct 13, 2024

by PW Kad

7.4k points

1 answer

3 votes

128k views

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