Recent questions in Chemistry

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What is an Example of Predicting Molecular Geometry of CO₂?

Oliver Lloyd asked Oct 8, 2024

by Oliver Lloyd

8.5k points

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Consider the following chemical equation. CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g) Calculate ΔH for the reaction using the bond enthalpies given.

Chronikum asked Oct 8, 2024

by Chronikum

7.8k points

1 answer

4 votes

128k views

Calculate the mass percent of copper in the compound copper(II) perchlorate hexahydrate

Clausen asked Oct 8, 2024

by Clausen

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1 answer

5 votes

13.7k views

The highlands of Uruguay look purple. True or False?

Jayne Mast asked Oct 8, 2024

by Jayne Mast

7.8k points

1 answer

3 votes

322 views

Atomic force microscopy can be used for ___________. 1) the monitoring and determination of molecular structure 2) nanomanipulation to pull or push on a specimen in an attempt to measure various mechanical

WynDiesel asked Oct 8, 2024

by WynDiesel

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1 answer

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What mass of ammonium chloride should you add to 2.35 l of a 0.150 moll−1 NH₃ to obtain a buffer with a ph of 9.36? for ammonia, kb=1.76×10⁻⁵.

Cary Millsap asked Oct 8, 2024

by Cary Millsap

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1 answer

4 votes

200k views

If 100. ml of 0.100 m naoh is added to 50. ml of 0.10 m hcl, what will be the ph at 25∘c?

Dave Ziegler asked Oct 8, 2024

by Dave Ziegler

8.3k points

1 answer

0 votes

133k views

What is the measurement of the amount of light passing through the solution ?

Arctic Vowel asked Oct 8, 2024

by Arctic Vowel

8.0k points

1 answer

1 vote

129k views

When silver tarnish reacts with aluminum metal in a basic solution, resulting in the formation of silver metal, hydrogen sulfide, and aluminum oxide. What type of reaction is being described? A) Synthesis

Vitali Avagyan asked Oct 8, 2024

by Vitali Avagyan

8.6k points

1 answer

4 votes

205k views

How many moles are in 92.4g of CaSO4?

Amirouche asked Oct 8, 2024

by Amirouche

7.5k points

2 answers

2 votes

128k views

Which of the following statements is false? a. All gases are ideal gases b. STP conditions are 273 K and 101.325kPa c. A characteristic gas constant has units of J/(kgK) d. An ideal gas is one that obeys

Stirredo asked Oct 8, 2024

by Stirredo

8.3k points

1 answer

5 votes

127k views

What are the propagation steps for allylic bromination with NBS?

Buck Hicks asked Oct 8, 2024

by Buck Hicks

8.4k points

1 answer

2 votes

101k views

For the reaction of HCl and NaOH, which of the following type of chemicals will appear in the net equation? a. weak acid b. weak base c. salt d. water

Kanish Mathew asked Oct 8, 2024

by Kanish Mathew

8.8k points

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1 vote

111k views

When is the net population growth rate for the prey population will be zero? dNprey/dt=rNprey =0

Morgan Christiansson asked Oct 8, 2024

by Morgan Christiansson

7.9k points

1 answer

2 votes

77.5k views

An extra strength antacid tablet contains 750 mg of the active ingredient, CaCO₃. If it takes 22.25 mL of HCl(aq) to neutralize the tablet, how strong is the acid? 2HCl(aq)+CaCO₃ (aq)→CaCl₂(aq)+H₂O(l)+CO₂(g)

Akshit M asked Oct 8, 2024

by Akshit M

8.0k points

1 answer

3 votes

196k views

АНОЗ what is the oxidation number for this compond

Goutam Pal asked Oct 8, 2024

by Goutam Pal

9.6k points

1 answer

5 votes

196k views

Butyl hydro-peroxide is an _________. A) dangerously reactive material B) combustible liquid C) oxidizing material D) flammable liquid

Arthurckl asked Oct 8, 2024

by Arthurckl

7.7k points

1 answer

2 votes

52.0k views

In 1863 John Newlands presented a paper, classifying the 56 discovered elements into 11 groups based on similar physical properties. He noted that pairs of similar elements existed which differed by some

Oush asked Oct 8, 2024

by Oush

8.3k points

1 answer

5 votes

154k views

Does 2Na+2H_2 O→2NaOH+H2_2 support or violate the law of conservation? a) Supports b) Violates

CPMunich asked Oct 8, 2024

by CPMunich

8.8k points

1 answer

4 votes

49.1k views

A sample of air has 3.55 moles of N₂ and 2.50 moles of O₂. What is the total pressure for the sample of air described, if the volume is 29.51 L and the temperature is 300 K? a. 1.01 atm b. 5.06 atm c.

Matthew Pickering asked Oct 8, 2024

by Matthew Pickering

8.1k points

1 answer

4 votes

135k views

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