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Andrews [41]
3 years ago
11

which element is less reactive, an element whose atoms have seven valence electrons or an element whose atoms have eight valence

electrons? explain
Physics
1 answer:
Agata [3.3K]3 years ago
5 0
Which element is less reactive, an element whose atoms have seven valence electrons or an element whose atoms have eight valence electrons? Why?<span>an element with 8 valence electrons because it doesn't require any additional electrons to become stable</span>
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Could an average star, such as our sun, become a neutron star?
algol [13]
No but the sun could be a white dwarf stellar remnant.
3 0
3 years ago
An object is 50 cm from a converging lens with a focal length of 40 cm . A real image is formed on the other side of the lens, 2
Leno4ka [110]

Answer:

d) -4.0

Explanation:

The magnification of a lens is given by

M=-\frac{q}{p}

where

M is the magnification

q is the distance of the image from the lens

p is the distance of the object from the lens

In this problem, we have

p = 50 cm is the distance of the object from the lens

q = 250 cm - 50 cm is the distance of the image from the lens (because the image is 250 cm from the obejct

Also, q is positive since the image is real

So, the magnification is

M=-\frac{200 cm}{50 cm}=-4.0

7 0
3 years ago
A cylinder with a movable piston contains 2.00 gg of helium, HeHe, at room temperature. More helium was added to the cylinder an
NikAS [45]

Answer: 1.8 g

Explanation:

We start first, by calculating the amount of Helium

n = m/M

m = mass of Helium

M = molar mass if Helium

n = 2/4 = 0.5 moles

proceeding further, we use ideal gas law. PV = nRT

Then we have

P1V1/n1T1 = P2V2/n2T2

So that,

n2 = n1T1P2V2/P1V1T2

From the question, we know that, P1 = P2, and T1 = T2. So that,

n2 = n1v2/v1

n2 = (0.5 * 3.9) / 2

n2 = 1.95/2

n2 = 0.975 moles. With this, we can determine the mass, m2 of Helium

n = m/M

m = n * M

m = 0.975 * 3.9

m = 3.8

The difference between both masses are 3.8 - 2 = 1.8 g

Thus, 1.8 g of Helium was added to the cylinder

3 0
3 years ago
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Which of the following statements shows stereotypes in communication?
faltersainse [42]
The answer is A, here's why
""women can be stronger than men" is a stereotype which means it's not a fact or can't be proven
also "men can be better cooks" is also a stereotype because it's also not a fact or can't be proven
6 0
3 years ago
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If you blow up a balloon, tie it off, and release it, it will fall to the ground.
RoseWind [281]

Answer:

carbon dioxide (what you are blowing up the balloon with) is a heavy gas. so when you fill the Balloon with it, the balloon will not float. helium is a light gas and floats. gravity takes another. part in this

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