Physics, 15.05.2021 21:00 noeliaalvarado

5.) What is the missing element? *

a. Hydrogen
b. Helium
c. Boron
d. Oxygen

5.) What is the missing element? *
a. Hydrogen
b. Helium
c. Boron
d. Oxygen

Answers: 2

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Answers

Answer from: yessicasaenz9878

i want to say it is C

Explanation:

Answer from: joseperez1224

Explanation:

This question is showing a stoichiometric reaction. But the out put is Helium and nitrogen. while the input has Hydrogen and something else. Hydrogen doesn't turn into different elements. So I think the question is wrong. But, He is missing , and so is the nitrogen, but since that's not a choice, maybe they hope you'll put He ?? :/ But like I said , the question is just wrong.

Answer from: Quest

The characteristics of groundwater is said to be: are weak turbiditya constant temperaturechemical composition and almost overall absence of oxygen.
Iwill mark as the brainliest answer

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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5.) What is the missing element? *

a. Hydrogen
b. Helium
c. Boron
d. O...

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