Recent questions in Chemistry

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An ideal solution is a solution in which all components obeys Raoult's law" A) True B) False

Kgryte asked Dec 16, 2024

by Kgryte

8.0k points

1 answer

4 votes

181k views

Explain how you would measure a heaping teaspoon of herbs and a pinch of salt.

Rdasxy asked Dec 16, 2024

by Rdasxy

7.9k points

1 answer

2 votes

139k views

What is the molarity of a HCl solution that contains 7.68 g of HCl in 253 mL of solution? Answer in units of M. Answer in units of M.

Casey Jordan asked Dec 16, 2024

by Casey Jordan

8.3k points

1 answer

0 votes

26.1k views

What is the initial molar concentration of oxygen in the beetle’s air bubble? I was told by someone else that the answer to this would be 0.294 mmol/L, but I’m pretty sure that this is wrong. Can you please

Oksana Romaniv asked Dec 16, 2024

by Oksana Romaniv

8.6k points

1 answer

0 votes

211k views

Which of the following statements about heme is TRUE? a) Heme consists of protoporhyrin X & Fe2+ b) It causes oxygen to form highly unreactive oxygen species c) Heme with Fe2+ can bind O₂ reversibly d)

S Anand asked Dec 16, 2024

by S Anand

8.0k points

1 answer

2 votes

186k views

Ohhh noooo! Donny Dont was asked what mass in kg a substance must have if its density is 3.00 kg/L and it takes up 12.0 gallons of volume. What units would his answer of 36 be in? Hint: it is a big jumbled

Haukinger asked Dec 16, 2024

by Haukinger

8.0k points

1 answer

2 votes

201k views

Draw a condensed structure and a skeletal structure for the following: sec-butyl tert-butyl ether b. isoheptyl alcohol

TanguyB asked Dec 16, 2024

by TanguyB

7.5k points

1 answer

3 votes

66.7k views

Now choose whihc way concentration gradient is diffusing

KaustubhK asked Dec 16, 2024

by KaustubhK

7.9k points

1 answer

5 votes

98.4k views

Indicate the hybridization of each interior atom in C₂H₂ (whose skeletal structure is HCCH). 1st C (sp): 2nd C (sp)

Ofer Helman asked Dec 16, 2024

by Ofer Helman

7.9k points

1 answer

5 votes

226k views

The number of protons in an atom determines its chemical properties. True or False?

Benjamin Penney asked Dec 16, 2024

by Benjamin Penney

8.6k points

1 answer

5 votes

18.1k views

What does sulfur supposedly smell like?

Luddet asked Dec 16, 2024

by Luddet

7.5k points

1 answer

3 votes

193k views

Find the valence electrons, lewis structure, shape, hybridization, pi and sigma bonds amount, bond polarity, and molecular polarity of the following: a.H₂O b.NH₃ c.CH₄ d.CH₂F₂ e.CO f.CO₂ g.HCN h.SO₂

Ironzionlion asked Dec 16, 2024

by Ironzionlion

8.2k points

1 answer

3 votes

73.6k views

In a particular apparatus, 77.4 seconds are required for a fixed amount of Ar to effuse from the piece of equipment. How long would it take for the same amount of N2, under the same conditions, to effuse

Harmon asked Dec 16, 2024

by Harmon

8.4k points

1 answer

2 votes

202k views

What does MCHC (mean corpuscular hemoglobin concentration) measure in blood? A) Red blood cell count B) Hemoglobin level C) Hematocrit value D) Hemoglobin concentration in a given volume of packed red

Aryan Najafi asked Dec 16, 2024

by Aryan Najafi

7.8k points

1 answer

1 vote

31.5k views

How many moles of water are there if you have 43 g of water? The molar mass of water is 18 g

Rajan Sharma asked Dec 16, 2024

by Rajan Sharma

8.5k points

1 answer

4 votes

155k views

Dichloromethane 50 mL round-bottom flask stoppered completely during the reaction. a) The flask was partially closed during the reaction. b) The reaction required a round-bottom flask. c) The reaction

Allanqunzi asked Dec 16, 2024

by Allanqunzi

8.5k points

1 answer

0 votes

60.4k views

A student calculated the percent by mass of water in a sample of BaCl2·2H2O to be 16.4%, but the accepted value is 14.8%. What was the student's percent error? a) 10.81% b) 11.89% c) 9.46% d) 10.00%

Sookie Singh asked Dec 16, 2024

by Sookie Singh

9.0k points

2 answers

1 vote

216k views

Assuming Na+ is permeable, what would happen if the outside concentration of Na+ changes from 150mM to 200mM? Ion [ ]Inside [ ]Outside K 140mM 5 mM Na 15mM 150mM Cl 10mM 120mM Ca 0.008mM 5mM

PaulP asked Dec 16, 2024

by PaulP

8.7k points

1 answer

3 votes

207k views

Difference between valency and valence electron

Jlarsch asked Dec 16, 2024

by Jlarsch

8.7k points

1 answer

4 votes

50.0k views

What is the density of 89 g ÷ 75cm³

Soumen Das asked Dec 16, 2024

by Soumen Das

8.0k points

1 answer

4 votes

169k views

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