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3 years ago

What is the charge of an atom with 2 more electrons than protons

Mathematics

1 answer:

xenn [34]3 years ago

8 0

Answer:

ionic charge

Step-by-step explanation:

So, an atom with an ionic charge of +2 has two more protons than electrons. The element calcium, for example, has atomic number 20 so the atom has 20 protons. The calcium ion with a positive +2 charge has two more protons than electrons.

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Find the output, h, when the input, x, is -18. h = 17+x\6

Mnenie [13.5K]

Answer:

$17 + \frac{ - 18}{6} = 17 - 3 = 14$

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3 years ago

If 2^a =0.5 and 5^b=125, what is the value of a^b +b^a?

kifflom [539]

9514 1404 393

Answer:

-2/3

Step-by-step explanation:

2^a = 0.5 = 2^-1 ⇒ a = -1

5^b = 125 = 5^3 ⇒ b = 3

Then the expression a^b +b^a is ...

a^b +b^a = (-1)^3 +3^(-1) = -1 +1/3 = -2/3

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3 years ago

What is this math question -22a =462

Lerok [7]

Answer:

a = -21

Step-by-step explanation:

-22 x -21 = 462

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3 years ago

X-4/y+2=5 solve for x I NEED THIS

zhannawk [14.2K]

Answer:

x - ----- = 3

Step-by-step explanation:

I'm assuming that you mean:

x - ----- + 2 = 5

Subtracting 2 from both sides, we get

x - ----- = 3

adding 4/y to both sides yields:

x = 3 + -----

7 0

3 years ago

Oxana [17]

Answer:

Step-by-step explanation:

$a(n) = a1 *(1.25)^{(n-1)}$

$a(1) = 5$

$a(2) = 5*(1.25)^{(2-1)}\\a(2) = 5*(1.25)^{1}\\a(2) = 5*(1.25)\\a(2) = 6.25$

$a(3) = 5 * (1.25)^{(3-1)} \\a(3) = 5 * (1.25)^{2}\\a(3) = 5 * 1.565\\a(3) = 7.813$

$a(4) = 5* (1.25)^{(4-1)}\\ a(4) = 5* (1.25)^{3}\\a(4) = 5* 1.953\\a(4) = 9.766$

$a(5) = 5 * (1.25)^{(5-1)}\\a(5) = 5 * (1.25)^{4}\\a(5) = 5 * 2.441\\a(5) = 12.207$

$a(6) = 5 * (1.25)^{5}\\a(6) = 5 * 3.052\\a(6) = 5 * 3.0517\\a(6) = 15.259$

$a(1) = 5$

$a(2) = 6.25$

$a(3) = 7.813$

$a(4) = 9.766$

$a(5)=12.207$

$a(6)=15.259$

3 0

3 years ago