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enyata [817]
3 years ago
11

1. An atom consist of charged particles called electrons and protons. Each proton has a charge of +1 and each electron has a cha

rge of -1.Remember number of electrons is equal to number of protons, while answering these questions i) What is the charge on an atom? Ii) What will be the charge of an atom if it loses an electron? Iii) What will be the charge of an atom if it gains an electron?
Mathematics
1 answer:
ruslelena [56]3 years ago
5 0

Answer:

I) no charge

ii) it will be positively charged

iiI) it will be negatively charged

Step-by-step explanation:

An atom is composed of electrons, neutrons and protons. Electrons are negatively charged while protons are positively charged. The number of electrons and protons in a neutral atom are exactly the same. This ensures the electrical neutrality of the atom.

However, if an atom looses an electron, there are now more protons than electrons present in the atom hence the atom is positively charged.

Similarly, if an atom gains an electron, it now contains more electrons than protons, hence it is negatively charged.

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Convert y=x squared +64x + 12 into graphing form
guajiro [1.7K]
To \ convert \ the \ standard \ form \ y = ax^2 + bx + c \ of \ a \ function \ into \ vertex \ form \\ \\ y = a(x - h)^2 + k ,\\ \\ we \ have \ to \ write \ the \ equation \ in \ the \ complete \ square \ form \ and \ vertex(h, k) \ is \ given \ by:

h = \frac{-b}{2a} , \ \ k = c -\frac{b^2}{4a} \\ \\y = a(x - h)^2+k

opens   up for a > 0, and  down for a < 0

y=x^2 +64x + 12\\ \\a=1,\ b=64 \ c = 12 \\ \\h = \frac{-64}{2}=-32 \\ \\ k = 12 -\frac{64^2}{4 }=12-\frac{4096}{4}=12-1024= -1012\\ \\y =  (x+32)^2-1012 \\ \\ This \ means \  the \  vertex \ of \ the \  parabola \ is \ at \ the \  point \ (-32, -1012)\\ \\ and \ the \  parabola \ is \ concave \ up.




3 0
4 years ago
PLZ HELP!<br><br> Complete this proof. <br> Given: a | | b <br> Prove: ΔMOP ~ ΔRON
SashulF [63]
As shown in the given figure
line a // line b ⇒ given
MR  and  NP  are transversals 
So, for ΔMOP and ΔRON , we can conclude the following
(1)  ∠1 = ∠2 ⇒⇒⇒ alternative angles are congruent
(2) ∠ MOP = ∠ RON ⇒⇒⇒ vertical angles are congruent
(3) ∠ 4 = ∠ 3 ⇒⇒⇒ alternative angles are congruent

So, from 1,2 and 3
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6 0
3 years ago
I don't get it and I'm mad now.
Stolb23 [73]
Tenths - 812.440
Hundredths- 812.400
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8 0
4 years ago
Jason's monthly practice time on the piano is 35 hours. This month, he has practiced 8.5 hours in week 1, 12 hours in week 2, an
krok68 [10]

Given :

Monthly practice time , T=35 hours .

This month, he has practiced 8.5 hours in week 1, 12 hours in week 2, and 5.5 hours in week 3.

To Find :

Many more hours of practice time does Jason need to complete .

Solution :

Number of hours he practice in week 1 , t_1=8.5\ hours .

Number of hours he practice in week 2 , t_2=12\ hours .

Number of hours he practice in week 3 , t_3=5.5\ hours .

Now , number of hours left is :

t=T-t_1-t_2-t_3\\\\t=35-(8.5+12+5.5)\ hours\\\\t=8\ hours

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8 0
3 years ago
1. Scientific Notation and Percent. (Based on the ideas in Objective 1 and Objective 4.) 6 points
vlabodo [156]

Answer: 1.715*10^{12} skin cells were not burned.

Step-by-step explanation:

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According the the data given in the exercise, you know that 2% represents 3.5*10^{10} of Sennie's skin cells that were burned. This means that the percent of her skin cells that were not burned is:

100\%-2\%=98\%

With this information you can write the following proportion:

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Solving for "x", you get:

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To express the result in Scientific notation, the decimal point must be after the first digit; then you must  move the decimal point two places to the left:

x=1.715*10^{12}

7 0
4 years ago
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