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mixer [17]
3 years ago
13

The line of longitude used as the origin in a system of coordinates

Chemistry
1 answer:
3241004551 [841]3 years ago
7 0
Yup, that is correct.
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What is the molarity of a solution that contains 20 grams of salt dissolved in 3.0 L of solution? The molar mass of water is 18g
natita [175]
Number of moles :

n = mass solute / molar mass

n = 20 / 18

n = 1.111 moles

Therefore:

Molarity  =  moles solute / volume

Molarity  = 1.111 / 30 => 0.37 M
6 0
3 years ago
Read 2 more answers
How are the structure and properties of solids related
Fiesta28 [93]

The general properties of solids reflect the orderly arrangement of their particles and the fixed locations of their particles.

5 0
3 years ago
How many grams of water are produced if we react 3 moles of hydrogen with 3 moles of oxygen?
Thepotemich [5.8K]

Answer:

About 60 grams

Explanation:

The balanced equation of the reaction is given as;

2H2(g) + O2(g) → 2H2O(l)

From the equation;

2 mol of H2 reacts with 1 mol of O2

3 mol of H2 would require 3/2 mol of O2 (considering the 2:1 ratio)

The limiting reactant is H2 as it would be used up before H2. It determines the amount of product that would be formed.

2 mol of H2 produces 2 mol of H2O

3 mol of H2 would produce 3 mol of H2O (Considering the 1 : 1 ratio)

Converting moles to mass;

Mass = Molar mass * Number of moles

Mass = 18 * 3 = 54 g

The correct option is; About 60 grams

4 0
2 years ago
Why might genetically identical twins have different phenotype
KIM [24]

Answer:

They may have different phenotypes because of differences in their environments, such as nutrition and healthcare. Why might genetically identical twins have different phenotypes?  Any genes on the same chromosome could be linked genes, whereas only genes on sex chromosomes can be sex-linked genes.

Explanation:

8 0
3 years ago
A sound wave is traveling at 331 m/s and has a frequency of 126 Hz. What is the wavelength?​
damaskus [11]
<h2>Answer</h2>

2.626984127 m

<h2>Explanation:</h2><h2></h2>

You have to know the equation that relates wavelength, frequency, and velocity (it's like speed but a bit different).

v = f x λ

where:

v = velocity

f = frequency

λ = Wavelength

Rearrange to make λ subject:

λ = v / f

We've been given 331 as the speed, 126 as the frequency. Sub it into the equation:

331 / 126 = 2.626984127 m

3 0
2 years ago
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