Recent questions in Chemistry

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What would happen if the percentages of nitrogen and oxygen and argon gas ever changed?

Kschneid asked Dec 21, 2024

by Kschneid

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Explain how an exergonic reaction graph would look like

Curious Slab asked Dec 21, 2024

by Curious Slab

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1 vote

195k views

A beryllium (Be) atom contains 4 protons, 5 neutrons, and 4 electrons. What would be formed if one proton were removed from this atom? A. A neutral atom of lithium B. A lithium ion C. A beryllium ion D.

Ahmed Moheb asked Dec 21, 2024

by Ahmed Moheb

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0 votes

125k views

According to Boyle's law, at a constant temperature, if the volume of a container of gas is doubled the pressure of the gas will A. double B. increase C. decrease D. stay the samples

Mobilekid asked Dec 21, 2024

by Mobilekid

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1 answer

0 votes

26.1k views

The Cl⁻ ion and the K⁺ ion are isoelectronic. a) True b) False

Tobias Dekker asked Dec 21, 2024

by Tobias Dekker

8.4k points

1 answer

1 vote

213k views

Number the following in order from least complex (1) to most complex (4) structure. a) Atoms b) Cells c) Tissues d) Organs

Chen Ni asked Dec 21, 2024

by Chen Ni

7.8k points

1 answer

3 votes

201k views

Write the balanced chemical equations for the following reactions (a) Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogencarbonate.

Dazbradbury asked Dec 21, 2024

by Dazbradbury

8.2k points

1 answer

4 votes

15.3k views

14. All living things react to sound, touch etc. Whatever causes a living thing to react is called a stimulus. The reaction is called a response. Which of these is an example of a STIMULUS- RESPONSE?

Anthony Sotolongo asked Dec 21, 2024

by Anthony Sotolongo

8.9k points

1 answer

4 votes

85.3k views

In the solid form, the cesium and chloride ions that make up cesium chloride (CsCl) exists as

Pezhvak asked Dec 21, 2024

by Pezhvak

8.8k points

1 answer

0 votes

185k views

Develop the formulas: molecular, developed, semi-developed (not grouped), and skeletal for the first 20 alkanes.

Josh Johanning asked Dec 21, 2024

by Josh Johanning

8.3k points

1 answer

3 votes

208k views

Which statement correctly describes the atomic emission spectrum of hydrogen? A) It is an emission (line) spectrum converging at low frequencies. B) It is an emission (line) spectrum converging at high

Madie asked Dec 21, 2024

by Madie

8.7k points

1 answer

1 vote

160k views

To what volume should you dilute 0.100L of a 15M NaOH solution to obtain a 1.0M NaOH solution

Duru Cynthia Udoka asked Dec 21, 2024

by Duru Cynthia Udoka

8.0k points

1 answer

4 votes

223k views

What is the mass (in g) of a solid piece of iron which has a specific heat of 0.449 J/g°C if when it absorbed 948.0 J of heat the temperature rose from 24.0°C to 82.1°C? Give your answer in 3 sig figs.

Anand B asked Dec 21, 2024

by Anand B

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1 answer

3 votes

208k views

Write a formula for the product of the combustion reaction of lithium with molecular oxygen.

Marker asked Dec 21, 2024

by Marker

8.7k points

1 answer

5 votes

172k views

Write the electron configurations of these elements: Si (long) = _______________________________ Se (long) = _______________________________ Pd (noble gas) = _______________________________ Tl (noble gas)

Pungggi asked Dec 21, 2024

by Pungggi

7.6k points

1 answer

3 votes

70.7k views

In order to balance the number of electrons lost and gained, the oxidation half-reaction must be multiplied by ___ and the reduction half-reaction must be multiplied by two. A) 1 B) 2 C) 3 D) 4

Sylvia asked Dec 21, 2024

by Sylvia

7.9k points

1 answer

1 vote

17.8k views

An infant is admitted to the hospital with severe dehydration. Laboratory results show pH 7.32, PaCO₂ of 40, HCO₃ of 21. How does the nurse interpret these results?

Tiddly asked Dec 21, 2024

by Tiddly

7.8k points

1 answer

3 votes

24.4k views

a ruby laser emits an intense pulse of light that lasts a mere 20 ns . the light has a wavelength of 690 nm, and each pulse has an energy of 400 mj .

Gary Murakami asked Dec 21, 2024

by Gary Murakami

8.1k points

1 answer

5 votes

91.0k views

In a coffee cup calorimeter, 12.0 g of zinc (Zn) are reacted with 0.5 L of 0.8 molars (M) HCl . The temperature of the water increases from 25.0 °C to 31.9 °C. If the HCl solution has a density of 1.0

Good Person asked Dec 21, 2024

by Good Person

8.2k points

2 answers

4 votes

121k views

For a TRIS buffer with a \( \mathrm{pKa} \) value of 8.30 and a solution with a pH of 6.50, what is the ratio of [TRIS]/[TRIS-H+]?

Knowledge Cube asked Dec 21, 2024

by Knowledge Cube

7.5k points

1 answer

4 votes

219k views

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