Recent questions in Chemistry

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How many 8-ounce glasses of water do you need to drink each day? A. 4 glasses. B. 6 glasses. C. 8 glasses. D. 10 glasses.

Jeffy asked Dec 28, 2024

by Jeffy

8.2k points

1 answer

5 votes

218k views

Why is it important for us to dry the material? How will this impact the amount of product that we collect or at least how we calculate the amount made?

Robertz asked Dec 28, 2024

by Robertz

7.8k points

1 answer

5 votes

138k views

How can you determine the number of valence electrons in a atom of a representative element?

Evgeny Karpov asked Dec 28, 2024

by Evgeny Karpov

8.6k points

2 answers

5 votes

185k views

In most proteins, these polar groups are aligned and form hydrogen bonds with one another when the backbone bends to form one of two possible structures:

Kader asked Dec 28, 2024

by Kader

7.5k points

1 answer

3 votes

61.1k views

What characteristic of water allows for hydrogen bonding between molecules? A) Its high specific heat. B) Its cohesive properties. C) Its covalent bonds. D) Its polar nature.

Peter Bennink asked Dec 28, 2024

by Peter Bennink

7.9k points

1 answer

2 votes

202k views

A student was asked how to convert the number of particles of a substance to its mass in grams. The student provided the following explanation: To convert the number of number molecules of Bismuth(III)

Skibee asked Dec 28, 2024

by Skibee

8.1k points

1 answer

5 votes

142k views

Which is NOT a property of ionic bonds and compounds? * high melting point O easily shatters / brittle O good conductors in solid form O good conductors in liquid form

Shluvme asked Dec 28, 2024

by Shluvme

7.9k points

1 answer

4 votes

177k views

The energy of an electron in a non-hydrogen atom is determined by the quantum number(s). a. n only b. ml only c. ml and ms d. l and ml e. n and l

IPhone Guy asked Dec 28, 2024

by IPhone Guy

8.2k points

1 answer

5 votes

22.8k views

If 150 g of trimethylgallium reacts with 100 g of arsine, what mass of GaAs could be produced? (a) 250 g (b) 300 g (c) 350 g (d) 400 g

Wella asked Dec 28, 2024

by Wella

7.5k points

1 answer

4 votes

25.3k views

Name the type of solution in each beaker with respect to the carrot pieces. (a) In the first beaker the solution is hypertonic and in the second beaker it is hypotonic (b) In the first beaker the solution

Herman Kan asked Dec 28, 2024

by Herman Kan

7.8k points

1 answer

2 votes

150k views

Which energy system is needed for running up a 100-yard hill as fast as possible? 1) Oxidative system 2) ATP-CP system 3) Anaerobic Glycolysis/lactic acid system

Yuxiang Wang asked Dec 28, 2024

by Yuxiang Wang

8.2k points

1 answer

2 votes

164k views

Identify the element for each of the following atomic numbers. (remember Z=atomic number and where can atomic number be found?!) Z=98 Z= 47 Z = 83 Z=17 Z=44

Denko Mancheski asked Dec 28, 2024

by Denko Mancheski

8.3k points

1 answer

3 votes

13.6k views

What is the daughter nuclei of the alpha decay of Am-241? A. Np-237 B. Am-245 C. Am-237 D. Bk-237 E. Np-239

Katiana asked Dec 28, 2024

by Katiana

8.7k points

1 answer

1 vote

96.7k views

If 20.0 grams of radioactive isotope are present at 1 p.m. and 5.0 grams remain at 2 p.m. what is the half life of isotope?

Cami asked Dec 28, 2024

by Cami

7.8k points

1 answer

0 votes

121k views

3. Looking at both plots, what do you notice about the concentration of CO₂ when the temperature was at its highest? 4. From this graph is it possible to say which rose first the carbon dioxide or the

Saleh Parsa asked Dec 28, 2024

by Saleh Parsa

8.1k points

1 answer

4 votes

143k views

T/F: The energy needed to remove the most loosely held electron from an atom, (valence electron).

Michael Defort asked Dec 28, 2024

by Michael Defort

8.2k points

1 answer

3 votes

72.1k views

Which of the following is NOT a characteristic of the minerals? A) Yield no energy B) Unstable to light C) Stable in cooked foods D) Structurally smaller than vitamins

Belema asked Dec 28, 2024

by Belema

8.4k points

1 answer

5 votes

221k views

Identify the base present in alkaline storage battery. Select one or more: a) Lithium hydroxide (LiOH) b) Ammonia (NH_3) c) Magnesium hydroxide (Mg(OH)2) d) Sodium hydroxide (NaOH)

George Yates asked Dec 28, 2024

by George Yates

9.0k points

1 answer

1 vote

79.6k views

which of the following correctly describes intermediates and/or transition states? an intermediate is always produced after the rate-determining step of a reaction mechanism. transition states have partially

Oskar Krawczyk asked Dec 28, 2024

by Oskar Krawczyk

8.8k points

1 answer

2 votes

81.0k views

Use periodic trends to select the atom in each pair with the higher first ionization energy: a) Mg b) P c) As d) Sb

Khristie asked Dec 28, 2024

by Khristie

8.3k points

1 answer

0 votes

235k views

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