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Annette [7]
3 years ago
6

Please solve this for 13 points

Chemistry
1 answer:
Anit [1.1K]3 years ago
6 0

Answer:

sodium

Explanation:

everybody already known its sodium

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according to the third law if a football player hits another player with an action force of 1500n how much will the reaction for
djyliett [7]

Answer:

The reaction would be 1500n (equal reaction)

Explanation:

This can be explained by Newton's third law of motion which states that for every action (force), there is an opposite and equal reaction. In other words, when two objects or people come in contact, the magnitude of force which they exert on each other is equal and they both feel an equal reaction force.

It doesn't matter whether one of the colliding bodies is of bigger mass than the other.  This Newton's third law of motion is also known as the law of action and reaction.

3 0
3 years ago
A wheelbarrow can be used to help lift a load, such as a pile of dirt, and then push the load across a distance.
mrs_skeptik [129]

Answer: it consists of two simple machines: a lever and a wheel and axle. Effort is applied to the lever by picking up the handles of the wheelbarrow.

Explanation:

4 0
3 years ago
What does ethylene glycol do to the solution in a vehicle’s radiator? It raises the boiling point and lowers the freezing point.
zheka24 [161]

Answer:

It raises the boiling point and lowers the freezing point.

Explanation:

It is used as antifreeze in the cooling circuits of internal combustion engines, that is, it is used to reduce the melting point of the solution.

By adding ethylene glycol I'm not only bringing the melting point to -13°C, but the boiling point of ethylene glycol is 197°C.

since these substances not only lower the freezing point but also increase the boiling point, they are also called a colligative agent

5 0
3 years ago
Read 2 more answers
The number above the elements symbol is the elements atomic number. Match each element with the number of valence electrons it h
Natali5045456 [20]

<u>Answer:</u> Aluminium has 3, Sulfur has 6, Sodium has 1, Silicon has 4, Magnesium has 2 and Phosphorous has 5 valence electrons.

<u>Explanation:</u>

Valence electrons are defined as the electrons which are present in the outermost shell of an element. This can be determined very well from the electronic configurations of the elements.

The given elements are the elements which belong to the same period which is Period 3.

Electronic configuration of the given elements:

Al(Z=13)=1s^22s^22p^63s^23p^1

S(Z=16)=1s^22s^22p^63s^23p^4

Na(Z=11)=1s^22s^22p^63s^1

Si(Z=14)=1s^22s^22p^63s^23p^2

Mg(Z=12)=1s^22s^22p^63s^2

P(Z=15)=1s^22s^22p^63s^23p^3

Hence, from the electronic configurations, Aluminium has 3, Sulfur has 6, Sodium has 1, Silicon has 4, Magnesium has 2 and Phosphorous has 5 valence electrons.

4 0
3 years ago
Read 2 more answers
A sample of gas has a volume of 1.16L at a temperature of 23C. At what temperature will the gas have a volume of 1.25L?
Masja [62]

Answer:

T₂ = 319.13 K

Explanation:

Given data:

Initial volume of gas = 1.16 L

Initial temperature = 23°C

Final temperature = ?

Final volume = 1.25 L

Solution:

Initial temperature = 23°C (23+273.15 = 296.15 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂  = V₂ T₁ / V₁

T₂ = 1.25 L × 296.15 K / 1.16 L

T₂ = 370.19 L.K /  1.16 L

T₂ = 319.13 K

7 0
3 years ago
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