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3 years ago

Find the density of a liquid with a volume of 3.8ml and a mass of 3.75 g.

Chemistry

1 answer:

NNADVOKAT [17]3 years ago

7 0

Answer:

0.987 g/ml

Explanation:

The formula for density is mass/ volume.

Substituting our values in we get density = 3.75/ 3.8 = 0.9868g/ml.

Hope this helps! Let me know if you have any questions :)

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Which of the following are supported by many observations

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Which of the following are supported by many observations

A- hypothesis

B- laws

C- theories

Laws and Theories

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3 years ago

In the nuclear transmutation represented by 168o(p, \alpha) 137n, the emitted particle is ________.

Alecsey [184]

Answer is: <span>the emitted particle is an alpha particle.
</span>

Nuclear reaction: ¹⁶O + p⁺ → ¹³N + α (alpha particle).<span>
Alpha decay is radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and transforms into an atom with an atomic number that is reduced by two and mass number that is reduced by four.
When oxygen-16 gain one proton, atomic mass is 17, but when lose alpha particle atomic mass reduces by four to 13.</span>

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3 years ago

What are hydroxyl groups and what happens to them when molecules combine?

Sloan [31]

Hi! Chemistry is complicated, right?

A hydroxyl group is a group that consists of
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3 years ago

How many moles are in 1.806 x 1024 molecules of bromine?

Pepsi [2]

<h3>Answer:</h3>

2.999 mol Br

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

<u>Step 1: Define</u>

1.806 × 10²⁴ molecules Br

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

<u /> $\displaystyle 1.806 \cdot 10^{24} \ molecules \ Br(\frac{1 \ mol \ Br}{6.022 \cdot 10^{23} \ molecules \ Br} )$ = 2.999 mol Br

<u>Step 4: Check</u>

<em>We are given 4 sig figs. Follow sig fig rules and round.</em>

Our final answer is already in 4 sig figs, so there is no need to round.

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3 years ago

Read 2 more answers

Which of the following compounds has only one atom of carbon?

frez [133]

<h3>Answer: CO2</h3>

Explanation:

Well C2H6 there are 2 carbon and 6 hydrogen atoms

and having no number on the right of the letter means there is only one atom

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3 years ago