Which waves have the longest wavelength and lowest energy on the electromagnetic spectrum?a.) X-Rays
b.) infrared
c.) radio
d.) gamma rays

Answers

Answer 1

Answer: Which waves have the longest wavelength and lowest energy on the electromagnetic spectrum?
a.) X-Rays b.) infrared c.) radio d.) gamma rays

Answer 2

Answer:

The answer is radio waves

Explanation:

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What is a group of organisms that look alike and can reproduce among their selfs ?

Answers

The group you are asking about is called a species.

an example of this kind of species is called bacteria. they reproduce amongst themselves, and usually look alike. i hope this helped.

Which position represents spring in the southern hemisphere?
A)
B)
C)
D)

Answers

The answer is; D

Spring precedes summer and comes after winter. Spring occurs when the southern face of the earth begins to face the sun (since the earth is tilted), hence received much sunlight and starts to gets longer days and shorter nights.

Answer:

Explanation:

The spring comes when the eath is in the closest located to the sun and the hemisphere is facing the sun directly with the tilting of the earth´s axis of rotation, so the one where the souther hemisphere is coming out of winter is C which is the farest from the sun and not facing the sun directly in the southern hemosphere, so the next position would be spring for the southern hemisphere which would be D.

How many atoms of hydrogen are in 24.4 g of methane?

Answers

Answer:

The number of atom is 3.67*10^24 atoms

Explanation:

Molar mass of methane CH4 is 16.0g/mol

Using this to divide the mass

24.4g/16.0 = 1.525mol

1 mol CH4 contains 1 mol of Carbon C and 4 mol of hydrogen H, so 1.525mol contains 4(1.525)=6.1 molH

Using avogadro number : (6.1mol)(6.02*10^23)

= 3.67*10^24 atoms

Final answer:

There are 3.66 × 10^24 hydrogen atoms in 24.4 g of methane (CH4). This is calculated by first finding the number of moles of CH4 and then using Avogadro's number to determine the total number of molecules, which is finally multiplied by 4 (the number of hydrogen atoms per CH4 molecule).

Explanation:

The question asks how many atoms of hydrogen are in 24.4 g of methane (CH4). Methane has a molecular formula of CH4, indicating that each molecule contains 4 hydrogen atoms. The molar mass of methane is 16.04 g/mol (12.01 g for carbon + 4 × 1.008 g for hydrogen).

First, calculate the number of moles of methane:

24.4 g CH4 × (1 mol CH4 / 16.04 g CH4) = 1.52 mol CH4

Then, multiply by Avogadro's number to find the total number of methane molecules:

1.52 mol CH4 × (6.022 × 1023 molecules/mol) = 9.15 × 1023 molecules of CH4

Since each molecule of methane has 4 hydrogen atoms, we get:

9.15 × 1023 molecules CH4 × (4 H atoms/molecule) = 3.66 × 1024 hydrogen atoms.

Which of the following would be and example of an independent variable

Answers

An independent variable is something that will occur without something else happening. An example of an independent variable is when your income depends on the number of sales. In this situation, your income depends on how many sales you make, so therefore, the number of sales you make is the independent variable.

List the number of atoms for each element in this compound: CaCO 3