Recent questions in Chemistry

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What mass of HCL is consumed by the reaction of 5. 0 of magnesium?

Christian Nilsson asked Dec 27, 2023

by Christian Nilsson

3.2k points

1 answer

24 votes

463k views

Why is the melting of hexene (C6H12) 69 degrees Celsius while themelting point of borax (Na2[B405(OH)4].8H20) is 743 degrees Celsius?

StevenWang asked Dec 27, 2023

by StevenWang

2.4k points

1 answer

40 votes

496k views

Magnesium and calcium are in the same group on the periodic table. sentence best explains why they have similar properties? OA. They both have two valence electrons. OB. They look alike. OC. They have

Xskxzr asked Dec 26, 2023

by Xskxzr

3.3k points

1 answer

4 votes

436k views

18.When magnesium combines with chlorine, it loses 2 electrons. What is the charge of magnesium?Select one:a. +2b. 0c. -2d. -4

Mark Otaris asked Dec 26, 2023

by Mark Otaris

2.6k points

1 answer

18 votes

347k views

Define boiling point and melting point.

Dillon Davis asked Dec 26, 2023

by Dillon Davis

2.9k points

2 answers

30 votes

209k views

Definition a visual representation of data that uses unconnected plotted points

Donkey Shame asked Dec 26, 2023

by Donkey Shame

2.6k points

1 answer

5 votes

125k views

A section of a topographic map is shown below

CTABUYO asked Dec 26, 2023

by CTABUYO

2.8k points

1 answer

15 votes

415k views

Please help please help

Pavel Shorokhov asked Dec 26, 2023

by Pavel Shorokhov

2.8k points

1 answer

21 votes

35.0k views

Mining companies can obtain iron from iron ore by treatment with carbon monoxide as described in the equation below. Fe2O3 (s) + 3CO (g) 2Fe (s) + 3CO2 (l) What mass of the excess reagent remains when

Lumbric asked Dec 26, 2023

by Lumbric

3.2k points

1 answer

21 votes

82.0k views

I need the answer asap

Mik Jagger asked Dec 26, 2023

by Mik Jagger

2.9k points

1 answer

29 votes

178k views

What does a catalyst do?A. Decreases the reaction rateB. Increases the equilibrium constantC. Increases the reaction rateD. Decreases the equilibrium constant

Jeereddy asked Dec 26, 2023

by Jeereddy

2.5k points

1 answer

1 vote

466k views

How many moles of each element are present in Pb(NO3)2?

Jeremy Whitlock asked Dec 26, 2023

by Jeremy Whitlock

2.9k points

1 answer

29 votes

454k views

Devils Tower is primarily made of a greenish rock called phonolite. The Giant's Causeway is made of a black rock called basalt. green rock with flecks of white and red and fine-grained black rock Compare

TrentP asked Dec 26, 2023

by TrentP

2.6k points

1 answer

6 votes

479k views

What happens with the electrons between two atoms in a polar covalent bond

Bisamov asked Dec 26, 2023

by Bisamov

2.6k points

1 answer

11 votes

52.3k views

Particles in a gas are always moving. true or false?

Anders Gram Mygind asked Dec 26, 2023

by Anders Gram Mygind

2.7k points

2 answers

35 votes

75.6k views

Chemistry Help!!!! Please Help

Allan Andrade asked Dec 26, 2023

by Allan Andrade

3.2k points

1 answer

37 votes

123k views

You will observe the orbits and you have to determine how many planets are in the habitable zone and how many are orbiting successfully. Based on the mass of the star and the placements of the planets,

Curiousexplorer asked Dec 26, 2023

by Curiousexplorer

2.5k points

1 answer

4 votes

246k views

Imagine the movement of a single gas molecule inside a container. Explain the particles motions in terms of kinetic- molecular theory

Seanzi asked Dec 26, 2023

by Seanzi

3.4k points

1 answer

7 votes

183k views

If 2 L of gas has a pressure of 6 atm at 27⁰C. what is the temperature in Celsius if the pressure is decreased to 2.5 atm and the volume is changed to 0.66L?

Cement asked Dec 26, 2023

by Cement

3.0k points

1 answer

44 votes

364k views

Why is the average atomic mass in the periodic table a decimal?

Seb Bizeul asked Dec 26, 2023

by Seb Bizeul

2.9k points

1 answer

10 votes

445k views

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