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qaws [65]
4 years ago
8

. Which elements were formed in the big bang? A. carbon, oxygen B. hydrogen, helium C. nitrogen, carbon dioxide D. chlorine, arg

on
Physics
2 answers:
salantis [7]4 years ago
8 0
Elements and the 'Big Bang' theory. During the formation of the universe some 14 billion years ago in the so-called 'Big Bang', only the lightest elements were formed – hydrogen and helium along with trace amounts of lithium and beryllium.
Nutka1998 [239]4 years ago
3 0
Hello there!

Well, the Big Bang only formed 3 elements (the rest were formed in stars and supernovae). These are Hydrogen, Helium, and Lithium.

Your correct answer will be b.

I hope this helps!
Brady
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Eric has a mass of 19.0 kg on the earth. What is Eric's weight on earth? What is Eric's weight on Mars? where the acceleration o
Tom [10]

Answer:

Weight on Earth = We = 186.2 N

Weight on Mars = Wm = 70.94 N

Explanation:

The weight of an object is defined as the force applied on the object by the gravitational field. The magnitude of weight is given by the following formula:

W = mg

were,

W= Weight of Eric

m = mass of Eric

g = acceleration due to gravity

ON EARTH:

W = We = Eric's Weight on Earth = ?

m = Eric's Mass on Earth = 19 kg

ge = acceleration due to gravity on Earth = 9.8 m/s²

Therefore,

We = (19 kg)(9.8 m/s²)

<u>We = 186.2 N</u>

<u></u>

ON MARS:

W = Wm = Eric's Weight on Mars = ?

m = Eric's Mass on Mars = 19 kg

gm = acceleration due to gravity on Mars = 0.381(ge) = (0.381)9.8 m/s² = 3.733 m/s²

Therefore,

Wm = (19 kg)(3.733 m/s²)

<u>Wm = 70.94 N</u>

3 0
3 years ago
During the period that the moon’s phases are changing from new to full, the moon is _____. waxing exhibiting retrograde motion w
Sindrei [870]
The answer that best fits the blank is the term WAXING. The moon is waxing whenever it reaches to the period that its phases are transitioning from new to full. The answer is the first option. This is when it is more that half is illuminated. Hope this helps.
3 0
3 years ago
Read 2 more answers
Plzzz someone help me!!!!.
Vlad [161]

Answer:

He could re read his answear.

Explanation:

4 0
3 years ago
An atom that has only one electron in its valence electron shell is ______ chemically reactive?
umka2103 [35]

The valence electrons are the electrons in the outermost electron shell of an atom.

Explanation:

The number of electrons in an atom's outermost valence shell governs its bondingbehaviour.

That is why elements whose atoms have the same number of valence electrons are grouped together in the Periodic Table.

Generally, elements in Groups 1, 2, and 13 to 17 tend to react to form a closed shell, corresponding to the electron configuration <span><span>s2</span><span>p6</span></span>.

This tendency is called the octet rule, because the bonded atoms have eight valence electrons.

3 0
4 years ago
Read 2 more answers
Which result occurs during an exothermic reaction?
baherus [9]

Answer:

Explanation:

Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.

3 0
3 years ago
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