Recent questions in Chemistry

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How many molecules are in 35 g of NBr2? Round your answer to 2 decimal places. a) 2.46 x 10^23 molecules b) 3.95 x 10^23 molecules c) 1.22 x 10^23 molecules d) 5.78 x 10^23 molecules

Poswald asked Dec 18, 2024

by Poswald

7.4k points

1 answer

2 votes

87.7k views

What is the solubility of calcite, CaCO₃, in grams per milliliter of solution at a temperature where Ksp = 9.9 x 10⁻⁹?

Alex Varghese asked Dec 18, 2024

by Alex Varghese

8.4k points

1 answer

0 votes

155k views

Consider a reaction where the reactants are at room temperature, and the products feel colder than their surroundings. What can you conclude about the reaction? A. It is endothermic. B. It is exothermic.

Royjavelosa asked Dec 18, 2024

by Royjavelosa

7.5k points

1 answer

5 votes

105k views

Calculate the concentration of the solution prepared by adding.

MHollis asked Dec 18, 2024

by MHollis

7.0k points

1 answer

4 votes

141k views

175pt spontaneously decays into 171os. what is another product of this decay?

Keith K asked Dec 18, 2024

by Keith K

8.9k points

2 answers

4 votes

152k views

In a study to determine the rate of the following reaction: 2NO(g)+O2(g)2NO2(g) the concentration of NO was 0.0550 M at t = 5.0 s and 0.0225 M at t = 650.0 s. What is the average rate of the reaction

Jogendar Choudhary asked Dec 18, 2024

by Jogendar Choudhary

8.0k points

1 answer

0 votes

175k views

What is the definition of beam spreading in science?

Reed Jones asked Dec 18, 2024

by Reed Jones

8.2k points

1 answer

5 votes

220k views

Which type of reaction is represented by the generic equation AB+CD --->AD+CB? combustion decomposition single replacement double replacement

Tuddy asked Dec 18, 2024

by Tuddy

8.5k points

2 answers

5 votes

51.6k views

State the segment or triangle that represents the image. 13. 90° counterclockwise rotation of MG about J 14. 90° clockwise rotation of AHGC about J 15. 180° clockwise rotation of HI about J 16. 180° counterclockwise

Akway asked Dec 18, 2024

by Akway

8.5k points

1 answer

5 votes

158k views

Consider the following rate law. rate =k[ A]ˣ Determine the value of x if the rate doubles when [A] is doubled. x=_____.

Sejn asked Dec 18, 2024

by Sejn

8.3k points

1 answer

2 votes

47.2k views

If you use 4g of sucrose to make 2.5 solution. what is the volume of solution you made?

JustSoAmazing asked Dec 18, 2024

by JustSoAmazing

9.0k points

1 answer

5 votes

130k views

A 20.0-g sample of an element contains 1.37 × 10²³ atoms. Identify the element. -OK -Te -Sr -Cu

Roy Lin asked Dec 18, 2024

by Roy Lin

8.8k points

2 answers

5 votes

111k views

A compound used in the treatment of manic depression has the formula Li2CO3.Which of the following is the correct name for this compound? a. dilithium carbonate b. lithium carbon trioxide c. lithium carbonate

Giovanni Lobitos asked Dec 18, 2024

by Giovanni Lobitos

8.1k points

1 answer

4 votes

30.1k views

From the start of collapse to the attainment of nuclear density, the process of core collapse at the end of the life of a massive star takes about

Sujay Mohan asked Dec 18, 2024

by Sujay Mohan

7.7k points

1 answer

5 votes

149k views

How many grams of Zn₂ are present in 1.51 grams of zinc oxide?

Sdfx asked Dec 18, 2024

by Sdfx

8.3k points

1 answer

3 votes

214k views

Is C₂H₅OH ethanol a strong acid, weak acid, strong base, weak base, or non-electrolyte? 1) strong acid 2) weak acid 3) strong base 4) weak base 5) non-electrolyte

Donmartin asked Dec 18, 2024

by Donmartin

8.0k points

1 answer

2 votes

83.8k views

Sodium bisulfite, NaHSO3. reacts with hydrochloric acid in a gas evolution reaction, producing water and two other products. Write the chemical formulas for the other two products to complete the reaction

Silagy asked Dec 18, 2024

by Silagy

7.9k points

1 answer

5 votes

176k views

What is the product of 2v7 and 10V21 in simplest radical form?

Iris Classon asked Dec 18, 2024

by Iris Classon

8.1k points

1 answer

5 votes

232k views

A drug that typifies the characteristics of its classification is ___________.

Tobiasz asked Dec 18, 2024

by Tobiasz

7.2k points

1 answer

4 votes

6.6k views

Need to know the answer to this question

Wim Feijen asked Dec 18, 2024

by Wim Feijen

8.5k points

1 answer

0 votes

55.8k views

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