3 years ago

What does the Periodic Table tell us about?

1 answer:

6 0

The periodic table lists all the elements, with information about their atomic weights, chemical symbols, and atomic number. The arrangement of the periodic table leads us to visualise certain trends among atoms.

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If the molar mass of the compound in problem 1 is 110 grams/mole, what is the molecular formula? With work?

tatyana61 [14]

C6H6O2 is the answer

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3 years ago

Science / which phrase describes the differences between these two liquid ?

Zina [86]

Answer:

viscosity

Explanation:

one one left is mercury and the other one is honey right?

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3 years ago

a vehicle accelerates with 0.4 m/s. calculate tue time taken by the vehicle to increase its speed from 20m/s to 40m/s.

Grace [21]

Answer:

$\huge\boxed{\sf t = 50 \ seconds}$

Explanation:

<h3><u>Given data:</u></h3>

Acceleration = a = 0.4 m/s²

Initial Speed = $V_i$ = 20 m/s

Final Speed = $V_f$ = 40 m/s

<h3><u>Required:</u></h3>

Time = t = ?

<h3><u>Formula:</u></h3>

$\displaystyle a =\frac{V_f-V_i}{t}$

<h3><u>Solution:</u></h3>

Rearranging formula for t

$\displaystyle t =\frac{V_f-V_i}{a} \\\\t = \frac{40-20}{0.4} \\\\t = \frac{20}{0.4} \\\\\boxed{t = 50 \ seconds}\\\\\rule[225]{225}{2}$

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2 years ago

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Velocity is a vector quantity.Why?

Alika [10]

Answer:

Has size and magnitude whereas a scalar quantity has only size

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3 years ago

A mixture is made of 40 ml of salt water to 200 ml of solution. What percent of the solution is salt water?

Serggg [28]

Answer:

16.7%

Explanation:

40 ml of salt water + 200 ml of solution = 240 ml

40/240 = 4/24 = 1/6=16.7%

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3 years ago