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Murljashka [212]
4 years ago
7

Why is lewis electron-dot diagrams more suitable than electron-shell diagrams illustrating chemical bonds

Chemistry
1 answer:
castortr0y [4]4 years ago
5 0
Lewis structures show the bonding between atoms of a molecule and the lone pairs that may exist in the molecule.
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how will knowing the density of a substance help you determine whether an object made from that material will float in water
trapecia [35]
The density of water is about 1kg/m³, therefore is the substance has a density of less than 1kg/m³ then it will most likely float however if it is more than 1kg/m³ then it will most likely sink.
4 0
4 years ago
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What does the shape of the moon we see depend on? (2 points)
Pachacha [2.7K]

Answer:

The position of the moon during its orbit around Earth.

Explanation:

7 0
2 years ago
How many grams of sodium are needed to react completely with 19
gtnhenbr [62]

Answer:

46 g of sodium

Explanation:

Sodium reacts vigorously with fluoride gas to form NaF as shown

2Na (s) + F2 (g) ------> 2NaF (s)            (Na = 23, F = 19)

2 moles of Na reacts with 1 mole of F2 to produce NaF

By calculating the molar mass of the elements involved in the reaction then multiplied by the mole, the mass can be obtained.

23 * 2 g/mol of Na reacts with 1 * 19 g/mol of F2

46 g/mol of Na reacts with 19 g/mol of F2 to produce NaF

Since the mole ratio is 2 to 1 and 19 g of F2 is used for the reaction, 46 g of sodium will be consumed for the reaction to be achieved.

6 0
3 years ago
What is the mass of a cube measuring 3cm on each side that had a density of 8.1g/cm3?
Hunter-Best [27]

Answer:

48.6 g

Explanation:

Given data:

Length of one side = 3 cm

Density of cube = 8.1 g/cm³

Mass of cube = ?

Solution:

First of all we will calculate the volume of cube.

V = length × height × width

V = 3 cm × 3cm× 3cm

V = 27cm³

Now we will determine the mass by using density formula.

d = m/v

d = density

m = mass

v = volume

8.1 g/cm³ = m/ 27 cm³

m = 8.1 g/cm³ ×27 cm³

m = 48.6 g

6 0
3 years ago
How many atoms does a gold bar and gold nuggets contain
Galina-37 [17]
The answer is 79 I believe
5 0
3 years ago
Read 2 more answers
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