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zvonat [6]
3 years ago
15

Draw the Lewis Structure for H2O.

Chemistry
1 answer:
GalinKa [24]3 years ago
3 0

Answer:

Structure has been shown below

Explanation:

  • In a Lewis structure, least electronegative atom is taken as central atom (except H)
  • Total valence electrons of constituting atoms are used to construct Lewis structure
  • A bond between two atoms are represented by a horizontal line or a dotted line (two dots).
  • Spatial rearrangement of atoms are neglected in Lewis structure.
  • H has one valence electron and O has six valence electrons. So, total valence electrons in H_{2}O are 8
  • Lewis structure of H_{2}O has been given below.

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How many milliliters of 0.25M H2SO4 can be prepared from 57 mL of a 3.0M solution of H2SO4?
DochEvi [55]

Answer:

Why ? Because 1 molecule of H2SO4 gives 2 H+ ions per molecule while only one H+ ion is required to neutralize 1 molecule of KOH. So, 1 molecule of H2SO4 can neutralize 2 molecules of KOH. Hence, we would require 525 ml of 0.03 M H2SO4 to neutralize 525 ml of 0.06 M KOH. How will we prepare 525 ml of 0.03 M H2SO4 ?

Explanation:

Now, we have 0.025 M H2SO4 and we do not know how much volume we have.

We will use the standard N1 X V1 = N2 X V2 for this calculation.

N1=0.025 M; V1=unknown; N2=0.03 M and V2=525 ml.

So V1= (0.03 X 525)/(0.025) = 630 ml.

5 0
3 years ago
What may be the most important tool to use for collecting data when conducting an investigation into how thermal energy affects
Anna11 [10]

Answer:

thermometer

Explanation:

The most important tool to use when collecting data relating to how thermal energy affects metals would be <u>the thermometer.</u>

The thermometer is an instrument used to measure temperatures and the temperature of a body is a measure of the amount of thermal energy present in the body.

<em>In order to obtain data relating to how thermal energy affects metals, the most important variable to take note of would be the thermal energy of the metals and this can only be done by the thermometer.</em>

5 0
2 years ago
Imagine a 15kg block moving with a speed of 20m/s. Calculate the kinetic energy of this block.
SSSSS [86.1K]

The kinetic energy formula is;

  • KE=\frac{m.v^2}{2}

The variable m represents the mass. Its unit is kilogram. We are informed that the mass of the object is 15kg. The variable v represents the linear velocity. Its unit is meter per second. We are informed that the linear velocity of the object is 20m/s. Let's find the kinetic energy of the object by substituting these values in the formula.

  • KE=\frac{15kg.(20m/s)^2}{2}
  • 2.KE=15kg.400m^2/s^2
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  • KE=(3000)kgm^2/s^2=3000J
5 0
1 year ago
Which of these factors should remain constant in a simulation of natural
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A is your answer The ratio of females to males
8 0
1 year ago
A molecule of glucose is comprised of 6 atoms of carbon, 12 atoms of hydrogen, and 6
Tanya [424]

Answer:

48

Explanation:

because you add 6 and 6 and 12 to get it

7 0
2 years ago
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