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eduard
4 years ago
6

The molecular mass of sodium oxide (Na2O) is

Physics
1 answer:
tresset_1 [31]4 years ago
7 0
<span>The answer is 62 u. The molecular mass of a molecule (Mr) is the sum of atomic masses (Ar) of its elements. Ar(Na) = 23 u. Ar(O) = 16 u. Therefore, the molecular mass of sodium oxide is 62 u: Mr(Na2O) = 2 * Ar(Na) + Ar(O) = 2 * 23 u + 16 u = 46 + 16 = 62 u.</span>
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Assume the price of gasoline doubles tonight and remains at that price the next two years. The price elasticity of demand for ga
Serggg [28]

Answer:

more inelastic

Explanation:

Assume the price of gasoline doubles tonight and remains at that price for the next two years. The price elasticity of demand for gasoline measured tomorrow will be <u>more inelastic</u> when compared with the price elasticity of demand for gasoline measured two years from now.

Inelastic refers to the static quantity of a good or service when its price changes.

5 0
3 years ago
What is the magnetic force (in newtons) on a particle traveling in a 1.5 T magnetic field if q = 7.5 microcoulombs and v = 1.75
Alla [95]

Given:

B(Magnetic field): 1.5 T                                                                                

q=  7.5 microcoulombs                                                                                

v= 1.75 x 10 ∧6 m/s                                                                                    

The angle ∅ between B and v is 45 °.                                                    

Now we know that F= qvB sin ∅

Substituting these values we get:

F= 7.5 x 10∧-6 x 1.75 x 10∧6 x 1.5 x sin 45                                                

 F= 16.752 N



3 0
3 years ago
A student does 25 J of work on the handle of a pencil sharpener. If the pencil sharpener does 20 J of work on the pencil, what i
allsm [11]

Answer:

80%

Explanation:

Efficiency of machine = work output/work input  ×100 %

From question, work output = 20J

Work input = 25J.

Therefore efficiency = 20/25 × 100 %

Efficiency = 20×4 %

Efficiency = 80%

I hope this was helpful, please mark as brainliest

3 0
3 years ago
When can we be certain that the average velocity of an object is always equal to its instantaneous velocity?
balandron [24]

Answer:

Average velocity is said to be equal to the instantaneous velocity when acceleration is zero. When acceleration of an object is equal to zero, there can be no change in speed or direction.

4 0
3 years ago
Which region of the country would be considered the most heavily religious
fgiga [73]

i would guess the national religon

8 0
4 years ago
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