Atoms are made up of electrons, protons and neutrons. Protons have a positive charge, electrons have a negative charge, and neutrons have no charge. The oxygen atom has 8 electrons and 8 neutrons. How many protons must it have to have 0 charge?

Answers

Answer 1

Answer:

Answer:

Protons and neutrons each count for one AMU, and the electron counts for zero AMU. So, if the atomic mass of oxygen is 16, that means we have a total of 16 protons and neutrons. 16 total protons and neutrons minus 8 protons leaves us with 8 neutrons.

Answer 2

Answer:

Final answer:

To have 0 charge, the oxygen atom, with 8 electrons and 8 neutrons, must have 8 protons. The 8 protons, each carrying a positive charge, will balance out the negative charges from the 8 electrons and make the atom neutral.

Explanation:

The oxygen atom as described in the question has 8 electrons and 8 neutrons, both electrons with a negative charge and neutrons with no charge. Now, to make the atom neutral or have 0 charge, the positive charges in the atom (from the protons) must cancel out the negative charges (from the electrons). Considering each electron has a charge of -1, there's a total negative charge of -8 coming from the 8 electrons. In order to balance that and bring the total charge to 0, the oxygen atom must have 8 protons. Each proton carries a +1 charge, so 8 protons will carry a +8 charge, which perfectly balances out the -8 charge from the electrons and gives the atom a net charge of 0.

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Don't understand these problems

The principal P is borrowed at a simple interest rate r for a period of time t. Find the simple interest owed for the use of the money. Assume 360 days in a year and round answers to the nearest cent.P=$180, r=3%, t= 2 years

Answers

Y= (180(1+.03)^2)-180

Find the range of {(3.2, –3), (7.6, 5.9), (1.4, –3), (–9.1, 8.3)}.

Answers

Answer:

range is -3, 5.9 , 8.3

Step-by-step explanation:

{(3.2, –3), (7.6, 5.9), (1.4, –3), (–9.1, 8.3)}

We are given with set of ordered pairs (x,y)

In each ordered pair, x is the domain and y is the range

for domain , take all the x values (first number) from the ordered pairs

for range, take all the y value (second number) from the ordered pairs

y values of the ordered pairs are -3, 5.9, -3, 8.3

So range is -3, 5.9 , 8.3

Answer:

{(3.2, –3)}

Step-by-step explanation:

The domain is the set of all the values of

x .The range is the set of all the values of y .

Domain: { 3.2 , 7.6 , 1.4 , − 9.1 }

Range: { − 3 , 5.9 , 8.3 }

The clearance sale advertised 1/3 off the list price of clothes and 1/2 off the list price of luggage. Ramon bought a suitcase with a list price of $100 and a coat with a list price of $195. What was his total bill?A. $115
B. $150
C. $180
D. $295

Answers

The closest answer C, however the actual answer is $196.25.

price of the coat = 2/3*195 = 2*195/3 = 2*65 = 130
price of the luggage = 1/2*100 = 100/2 = 50
total bill = 130+50 = 180

The intersection of the graph of two linear equations can be located on a cartesian grid by starting at the origin, moving 5 units to the left, and moving 7 units down. Which of these solution to the system of equations?A. X= -y= -5

B. X= -7; Y= 5

C. X= -5; Y= -7

D. X= 5; Y= 7

Answers

answer C x= -5 and y= -7

You discovered you can deduct medical expenses over 6% of your income. Your income is $42,000, and you had medical expenses of $567. What portion of your medical expenses can you deduct?a) $0
b) $34
c) $567
d) $2,520

Answers

Answer
c) $567

Explanation
The income is $42,000
6% 0f $42,000 = 6/100 ×42,000
= 0.06×42,000
= $2,520

This is more than your medical expense. This means that the portion that your medical expense that you can deduct is the whole amount, $567.

Your total income is 42,000 dollars and you can deduct 6% of medical expenses from your income.
Now you have 567 dollars medical expenses. Let's solve for the portion of medical expenses we can deduct
=> 6% of your income is Letter 2 520 dollars, since your medical expenses is only 567 dollars, thus you can deduct this all.

2 or more equal ratios for 7/16