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3 years ago

What is the mass in grams of 6.022×1023 atoms of mass 16.00 amu?

Chemistry

1 answer:

skelet666 [1.2K]3 years ago

6 0

You need the Avogadro's number. I can't remember exactly the calculation.

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Density can be calculated by dividing an object's mass by its volume. If the mass of an object is 10 grams and its volume is 2 m

Luden [163]

Explanation:

mass =10g. volume=2ml. density=mass/volume = 10/2=5kg/m^3

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3 years ago

Describe two techniques used to measure the PH of a solution

natali 33 [55]

Answer:

ph paper, or a ph meter

Explanation:

8 0

3 years ago

Read 2 more answers

Using the following bond energies:

uranmaximum [27]

Answer:

The answer is "Option b".

Explanation:

Given equation and value:

$\Rightarrow C_2H_2 \ (g)+ \frac{5}{2}O_2 \ (g) \longrightarrow 2CO_2\ (g)+H_2O\ (g)$

$\left\begin{array}{ccc}C \equiv C&839\\C-H &413\\O=O &495\\ C=O &799\\ O-H &467 \end{array}\right \\\\$

calculating equation value:

$\Rightarrow 839 + 2(413) +\frac{5}{2} (495) \longrightarrow 2(2)799+2 \times 467 +E$

$\Rightarrow 839 + 826 +1237.5 = 3196+934 +E\\\\\Rightarrow 2902.5 =4130 +E\\\\\Rightarrow 2902 = 4130 +E\\\\\Rightarrow 2902 - 4130 +E\\\\\Rightarrow E = -1228 \ KJ \\\\$

4 0

3 years ago

Which is true for every atom of an element?

antoniya [11.8K]

C. It has mass and volume

Explanation:

Every atom of an element has mass and volume. Mass is the amount of substance it contains this is usually a function of their subatomic particles.

The bulk of the mass of an atom is concentrated in the nucleus where we have protons and neutrons. Electrons do not really add much to the mass of an atom.

Atoms also have specific volume.

The reason for our selection is that atoms are the smallest particle of matter.
Matter is anything that has weight and occupies space.
Since it is matter, it must have specific weight and volume

learn more:

Matter brainly.com/question/8839455

#learnwithBrainly

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3 years ago

Is C8H18 an electrolyte or non-electrolyte

podryga [215]

C₈H₁₈ is a non-electrolyte

Why?

Electrolytes are substances that dissociate into ions when dissolved in water. In order to do that, they need to have bonds that are polar enough to be able to dissociate, and the ions formed need to be soluble in water.

C₈H₁₈ is a compound that has a low electronegativity difference between its atoms, making it to be a covalent compound where electrons are shared, and making it non-polar, and difficult to dissociate. Thus, it is a non-electrolyte.

One possible structure for C₈H₁₈ is attached below. It's called octane.

Have a nice day!

#LearnwithBrainly

4 0

3 years ago