CHEMISTRY HIGH SCHOOL

Which term best defines a saturated hydrocarbon with single bonds only?a. alkane
b. isomer
c. alkene
d. alkyne

Answers

Answer 1
Answer: the answer is A "alkane"
Answer 2
Answer:

Answer:

\large \boxed{\mathrm{A. \ alkane}}

Explanation:

Alkanes are saturated hydrocarbons with only single bonds of carbon and hydrogen.

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A soccer ball is stationary, and gravity is pulling a soccer ball with a force of 25 N. You kick the ball with a force of 40 N. What is the net force? Is the force balanced or unbalanced?

Answers

To determine the net force acting on the soccer ball, we need to calculate the difference between the force applied by gravity and the force applied by your kick.
Force due to gravity: 25 N
Force applied by your kick: 40 N
The net force is calculated by subtracting the force due to gravity from the force applied by your kick:
Net force = Force applied by your kick - Force due to gravity
= 40 N - 25 N
= 15 N
The net force acting on the soccer ball is 15 N.
Since the net force is not equal to zero, the forces are unbalanced.


I hope this helps.

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Formula A: CH3Formula B: C2H6
Given the two formulas representing the same compound:
Which statement describes these formulas?
(1) Formulas A and B are both empirical.
(2) Formulas A nd B are both molecular.
(3) Formula A is empirical and Formula B is molecular.
(4) Formula A is molecular and Formula B is empirical.

Answers

Correct option is (3).

Empirical formula:-Simplest whole number ratio of various atoms present in a compound.

Molecular formula:-The formula that gives the total number of atoms of each element in each molecule of a substance.

So, C_2H_6(formula B) is the molecular formula, andCH_3 (Formula A)is the empirical formula.

Hence, the correct option is (3).

To know more about:-

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(3) because Hydrocarbon compound has 3 forms:
CnH2n
CnH2n-2
And CnN2n+2

What is the molar mass N
what is the molar mass U

Answers

The molar mass for N is 14.007 g/mol

The molar mass for U is 238.03g/mol

The molar mass is the same as mass number if it is only one element with no subscripts.

If it was H2O then it would be 18.016g/mol

Click on the diagram to choose which atom is more reactive.

Answers

Answer:

Second graph is more reactive.

Explanation:

I just did the lesson myself, chose the first graph, and obviously got it wrong.

Therefore I can tell you with 100% certainty that the correct answer is graph #2 in this case.  Hope this helps.

The first diagram is the atom that is more reactive

What are some of the limitations of forensic drug chemistry?

Answers

Thelimitations of forensic drug chemistry is (1) they cannot create drugs out ofwht they learned in chemistry although they can create one, (2) theire line of expertiseis limited to the illegal drugs and crime committed acts.

They know how to identify the drugs found at crime scenes.

how much oxygen would be produced by heating 20 g of mercury (II) oxide if 18.6 g of mercury is produced?

Answers

According to the stoichiometry of the reaction of mercury(II) oxide 1.477 g of  oxygen would be produced by heating 20 g of mercury (II) oxide if 18.6 g of mercury is produced.

What is stoichiometry?

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

433.18 g mercury (II) oxide gives 32 g oxygen thus, 20 g  of mercury (II) oxide will produce 20×32/433.18= 1.477 g of oxygen.

Thus, 1.477 g of  oxygen would be produced by heating 20 g of mercury (II) oxide if 18.6 g of mercury is produced.

Learn more about stoichiometry,here:

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Hg2O -> O2 + Hg
2Hg2O -> O2 + 2Hg
20g-> ?g + 18.6g
                     (1 molHg2O )       (1 mol O2)           (32g O2)
 20g 2Hg2O x -------------------   x -------------------  x  -------------- = 0.77g O2
                    (834.36Hg2O)    (1 mol Hg2O)       (1 mol O2)
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