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skad [1K]
3 years ago
12

Calling all cars that have removable roofs convertibles is an example of

Chemistry
2 answers:
NemiM [27]3 years ago
8 0

Answer:

concept formation

Explanation:

Soloha48 [4]3 years ago
4 0
<span>Labeling practice ᕕ( ᐛ )ᕗ</span>
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Calculate the percent of each component in the mixture. Show your calculations. Circle final answers.
Colt1911 [192]

Answer:

See Explanation

Explanation:

The question is incomplete; as the mixtures are not given.

However, I'll give a general explanation on how to go about it and I'll also give an example.

The percentage of a component in a mixture is calculated as:

\%C_E = \frac{E}{T} * 100\%

Where

E = Amount of element/component

T = Amount of all elements/components

Take for instance:

In (Ca(OH)_2)

The amount of all elements is: (i.e formula mass of (Ca(OH)_2))

T = 1 * Ca + 2 * H + 2 * O

T = 1 * 40 + 2 * 1 + 2 * 16

T = 74

The amount of calcium is: (i.e formula mass of calcium)

E = 1 * Ca

E = 1 * 40

E = 40

So, the percentage component of calcium is:

\%C_E = \frac{E}{T} * 100\%

\%C_E = \frac{40}{74} * 100\%

\%C_E = \frac{4000}{74}\%

\%C_E = 54.05\%

The amount of hydrogen is:

E = 2 * H

E = 2 * 1

E = 2

So, the percentage component of hydrogen is:

\%C_E = \frac{E}{T} * 100\%

\%C_E = \frac{2}{74} * 100\%

\%C_E = \frac{200}{74}\%

\%C_E = 2.70\%

Similarly, for oxygen:

The amount of oxygen is:

E = 2 * O

E = 2 * 16

E = 32

So, the percentage component of oxygen is:

\%C_E = \frac{E}{T} * 100\%

\%C_E = \frac{32}{74} * 100\%

\%C_E = \frac{3200}{74}\%

\%C_E = 43.24\%

5 0
3 years ago
PLZ ANSWER FAST LOL:If the magnets are aligned will the spacecraft and launcher repel, attract, or do both?
sineoko [7]

Answer:

Explanation:

The answer depends, if they are at opposite poles they will attract but if they are at the same pole they will repel

7 0
3 years ago
Balance the chemical equation : CH₄ + O₂ → CO₂ + H₂O
s344n2d4d5 [400]

<u>Answer</u>:

balanced equation: CH₄ + 2O₂ → CO₂ + 2H₂O

<u>Explanation</u>:

Given sample: CH₄ + O₂ → CO₂ + H₂O

  • The carbon is same, so no need to change.
  • Hydrogen 2 less on left side so putted "2" before H₂O = "2H₂O"
  • so now, there is total 4 oxygen on left side to balance put 2 before right side oxygen like this "2O₂"

changes applied: CH₄ + <u>2</u>O₂ → CO₂ + <u>2</u>H₂O

3 0
3 years ago
Compare and contrast ionic and molecular compounds.
julia-pushkina [17]

Answer:

Ionic compounds consist of positive and negative ions bound together by electrical attraction. Molecular compounds are groups of atoms held together by covalent bonding, or the sharing of electrons..

Explanation:

6 0
3 years ago
Is 2Na + Cl --&gt; 2NaCl a balanced chemical equation? Is it obeying the law of conservation of matter?
Elden [556K]
Yes it is balanced, and yes it is obeying the law of conservation of matter.
4 0
4 years ago
Read 2 more answers
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