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wolverine [178]
3 years ago
12

Which unit abbreviation is a measurement of force?

Chemistry
2 answers:
pashok25 [27]3 years ago
6 0

Answer:

Newton is the unit of force, abbreviated as "N"

Explanation:

Let us understand the given units:

a) m/s: it is meter per second. It is SI unit of speed or velocity.

b) m/s: it is meter per second square. It is SI unit of acceleration (velocity per second).

c) N : it is unit of force. It stands for Newton.It is equal to 1 kilogram meter per second squared.

d) N/s: it is newton per second. It is unit of momentum.

Artemon [7]3 years ago
4 0
So,

Recall Newton's Second Law of Motion: force = mass x acceleration

Also recall:

acceleration = velocity/time
velocity = distance/time

Distance is expressed in meters.
Time is expressed in seconds.
Mass is expressed in kilograms.

v = m/s
a = m/s^2
F = m * a
F = kg * m/s^2

F= \frac{kg*m}{s^2}

The unit for force is the Newton (N).
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5) answer is A
Burka [1]

Answer:

A)  positive; added

Explanation:

Based on the reaction:

2NaHCO3(s) + 129kJ → Na2CO3(s) + H2(g) + CO2(g)

<em>2 moles of NaHCO3 requires 129kJ to produce 1 mole of Na2CO3, 1 mole of H2 and 1 mole of CO2.</em>

<em />

That means, the energy must be added being, thus, an exothermic reaction. The exothermic reactions have ΔH >0.

Thus, right answer is:

A)  positive; added

3 0
2 years ago
Write a general word equation for a neutralization reaction.
xenn [34]
Hydrochloric acid + Sodium hydroxide =Sodium chloride +water
8 0
3 years ago
N methyl 2 pyrrolidone heated with aqueous acid reaction
monitta
<span>N-methyl 2 pyrrolidone is a cyclic amide and it when heated with aqueous acid gives the product as a cyclic amino acid. The product name is </span><span>N-Methyl-4-aminobutyric acid</span><span>

The reaction is given as follows in the attached picture.

</span>

5 0
3 years ago
Calculate the mass percent (m/m) of a solution prepared by dissolving 45.09 g of NaCl in 174.9 g of H2O.
inysia [295]

Answer:

20.3 %  NaCl

Explanation:

Given data:

Mass of solute = 45.09 g

Mass of solvent = 174.9 g

Mass percent of solution = ?

Solution:

Mass of solution = 45.09 g + 174.9 g

Mass of solution = 220 g

The solute in 220 g is 45.09 g

220 g = 2.22 × 45.09

In 100 g solution amount of solute:

45.09 g/2.22 = 20.3 g

Thus m/m% = 20.3 %  NaCl

5 0
3 years ago
BRAINLIESTTT ASAP!! PLEASE HELP ME :)
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Answer : False, there will be two lithium and one oxygen atoms in a unit molecular structure of lithium oxide.

Explanation:

Electronic configuration of lithium is :

Li=1s^2s^1

In order to attain stable electronic configuration it will loose an electron and form positively charge cation.

Li^+=1s^22s^0

The electronic configuration of oxygen is:

O=1s^22s^22p^4

Oxygen being second most electronegative atom requires two electrons to attain noble gas configuration stability and form negatively charge ion with 2- charge.:

O^{2-}=1s^22s^22p^6

When two atom of lithium and oxygen comes together , one electron from each lithium atom get transferred to an oxygen atom which results in formation of lithium oxide.

2Li^++O^{2-}\rightarrow Li_2O

4 0
3 years ago
Read 2 more answers
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