Recent questions in Chemistry

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Calculate the following round to the proper number of significant figures and write in standard scientific notation.2.51x104-1.5x103

Aitor asked Jul 6, 2023

by Aitor

4.2k points

1 answer

5 votes

17.6k views

Key term of for the shape of the earth. It has bulging equator and squeezed poles. A. Eclipse B. Solstice C. Heliocentrism D. Oblate spheroid

Rpkamp asked Jul 6, 2023

by Rpkamp

5.7k points

1 answer

8 votes

180k views

What is the density of a metal object that has a volume of 9.00 cm" and a mass of 48.0 g ?

Kim Nyholm asked Jul 6, 2023

by Kim Nyholm

4.9k points

1 answer

10 votes

72.9k views

In a chemical equation, the number of atoms of a particular element that are present in a substance is indicated by a:________.

Edgar Olivar asked Jul 6, 2023

by Edgar Olivar

5.1k points

1 answer

0 votes

178k views

What do you call a large body of air? wind thunderstorm cold front air mass

Holmes asked Jul 6, 2023

by Holmes

4.7k points

2 answers

11 votes

115k views

What would be the energy in problem 1?

Subhadarshi Samal asked Jul 6, 2023

by Subhadarshi Samal

4.4k points

1 answer

18 votes

207k views

What is the molar mass of aluminum (Al)

Sonle asked Jul 6, 2023

by Sonle

4.1k points

2 answers

3 votes

6.0k views

2H2 + O2 --> 2H2OHow many moles of hydrogen gas are needed to produce 120g of water?

Etherealm asked Jul 6, 2023

by Etherealm

4.1k points

1 answer

1 vote

162k views

Calculate the mass in grams for 2.28 moles of N2. 228 g 63.9 g 6.39 g 2.28 g

Mmiika asked Jul 6, 2023

by Mmiika

5.0k points

1 answer

17 votes

18.6k views

HELP PLS ASAP how many liters of CO2 are produced when 32.6 liters of propane gas C3H8 reacts with excess oxygen at STP? C3H8 + 5O2 > 4H2O + 3CO2

Awasik asked Jul 6, 2023

by Awasik

3.8k points

1 answer

16 votes

55.5k views

What is the meaning of molecules

Jeanmarie asked Jul 6, 2023

by Jeanmarie

4.5k points

1 answer

3 votes

168k views

Substance Sodium (Na) Chlorine (CI) Sodium Chloride (NaCl) Physical Appearance Shiny, soft, solid metal Greenish gas C White crystals Boiling Point (°C) 883 -34 1,465 Change When Added to Water Which statement

Lizelle asked Jul 6, 2023

by Lizelle

4.3k points

2 answers

3 votes

64.6k views

How to find molecular mass of ammonia.

Scoutman asked Jul 6, 2023

by Scoutman

4.3k points

1 answer

4 votes

82.8k views

I NEED HELP ASAP !!!!!!!!!!!!

Otavio asked Jul 6, 2023

by Otavio

4.4k points

1 answer

4 votes

17.4k views

What is one disadvantage of wind and hydroelectric power?OA. Their supplies are limited and only last a few years in a singlocation.B. They require more complicated technology than other energsources.OC.

Walery Strauch asked Jul 6, 2023

by Walery Strauch

4.7k points

1 answer

2 votes

197k views

1. A car has a mass of 4000 kg. What force is required to make the car accelerate at 20 mss

Malibu asked Jul 6, 2023

by Malibu

4.6k points

1 answer

14 votes

89.5k views

How would you describe the temperature of an object that has very slow moving particles?

CinCout asked Jul 6, 2023

by CinCout

4.7k points

1 answer

3 votes

18.4k views

100 POINTS HELP Which data is an example of quantitative data? A. An apple has a mass of 86.5 g. B. An apple has a sweet scent. C. An apple is red and yellow.

Flipke asked Jul 6, 2023

by Flipke

5.1k points

1 answer

1 vote

80.7k views

Determine the empirical formula for this compounds from the experimental data:1.99 grams of aluminum combines with 1.76 grams oxygen

Etov asked Jul 6, 2023

by Etov

4.4k points

1 answer

5 votes

59.2k views

A. Which of the following correctly describes the composition of an electromagnetic wave? a transverse electric wave and a magnetic C. a transverse electric wave and a magnetic transverse wave that are

Peterdk asked Jul 6, 2023

by Peterdk

4.5k points

1 answer

7 votes

82.9k views

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