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4 years ago

14

How many grams of carbonic acid were produced by the 3.00g sample of NaHCO3

1 answer:

Alexxx [7]4 years ago

8 0

I dont know what subject is this

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A good place to start when evaluating scientific evidence is to

slava [35]

First of all scientific evidence is anything that is gathered using the scientific method that supports a hypothesis can be considered. According to me, a good place to start evaluating is to look at whether the evidence was collected using good scientific principles.

Good luck :)

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3 years ago

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Bismuth has a density of 9.80 g/cm^ 3 . What is the of 3.74 cm ^ 3 of Bi?

Ierofanga [76]

Explanation:

density = mass/ volume

mass= density × volume

mass= 9.80× 3.74

mass= 36.652 g

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3 years ago

An upward force acts on a proton as it moves with a speed of 2.0 × 105 meters/second through a magnetic field of 8.5 × 10-2 tesl

mel-nik [20]

Explanation :

It is given that,

Speed of the proton, $v=2\times 10^{5}\ m/s$

Magnetic field, $B=8.5\times 10^{-2}\ T$

Magnetic force is given by :

$F=q(v\times B)$

q is the charge of proton, $q=1.6\times 10^{-19}\ C$

So,

$F=1.6\times 10^{-19}\ C\times 2\times 10^{5}\ m/s\times 8.5\times 10^{-2}\ T$

$F=2.72\times 10^{-15}\ N$

The direction of force is given by using right hand rule. So, the force will act in upward direction.

Hence, the correct option is (a) " $2.72\times 10^{-15}\ N$ to the north".

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3 years ago

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Nuclear decay that can be stop by 0.5 cm of lead

seraphim [82]

Beta rays my friend
kind of ironic me and my sister were just talking about this

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3 years ago

PLZ HELP PPPLLLLLZZZZ HELP ITS OVER DUE PPPPPPPPPPPLLLLLLLLLLLLLLLLLLLLZZZZZZZZZZZ

vlada-n [284]

I think it is the bottom left :)

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3 years ago