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3 years ago

How are the elements contained within a group on the periodic table related? (select all that apply.)?

1 answer:

8 0

<span>These atoms tend to be vertically aligned on the tabe. These elements have the same number of electrons on their outermost orbit and tend to share one or more major chemical property, such as being metal or being liquid at room temperature.</span>

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Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will____

VARVARA [1.3K]

Answer:

B. Increases, Decreases

Explanation:

I majored in Chemistry

4 0

3 years ago

0.446 g of hydrogen gas fills a 5.0 L bag determine the density of hydrogen

Oduvanchick [21]

The density of hydrogen : ρ = 0.0892 g/L

<h3>Further explanation</h3>

Given

mass of Hydrogen : 0.446 g

Volume = 5 L

Required

The density

Solution

Density is a quantity derived from the mass and volume

Density is the ratio of mass per unit volume

The unit of density can be expressed in g/cm³, kg/m³, or g/L

Density formula:

$\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}$

Input the value :

ρ = m : V

ρ = 0.446 g : 5 L

ρ = 0.0892 g/L

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3 years ago

Which best describes the changes occurring to the earth's surface over time?

uysha [10]

Answer:

I would say the answer is 2

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2 years ago

You are asked to weigh approximately 0. 4g of acetylsalicylic acid to the nearest mg. When you enter the data in grams in your l

Natali5045456 [20]

The significant figures will be 1.

As, weight of acetylsalicylic acid = 0. 4 g

We obtain 400 mg when we convert 0.4g of acetylsalicylic acid to mg.

So, 400 milligrams are worth 0.4 grams when converted to grams.

There is just one significant figure because 0 before a decimal is not significant i.e. 4.

<h3><u>What are significant figures?</u></h3>

The digits of a number that have relevance in relation to the measurement's resolution are known as significant figures. Additionally known as significant figures in chemistry. All experimental measurements are subject to some degree of uncertainity.

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Check more such questions based on significant figure here:

brainly.com/question/24491627

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1 year ago

Oxygen is earth's most abundant element by volume in earth's?

agasfer [191]

Oxygen is Earth's most abundant element by volume in Earth's Orbit

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3 years ago