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Sedbober [7]
3 years ago
14

50 mph is a example of

Chemistry
1 answer:
Evgesh-ka [11]3 years ago
3 0
The answer will be speed
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Which of the following elements will sulfur most readily react with in order to help it fill its outer shell with 8 electrons?
Gelneren [198K]

Answer:

Magnesium

Explanation:

Using the KLMN styled electronic configuration, the electronic configuration of sulphur with atomic number 16 is 2, 8,6

What this means is that it needs extra 2 electrons to fill into its M shell to attain the octet configuration.

Now let’s look at Magnesium, with atomic number 12, the electronic configuration it has is 2,8,2.

This means it has 2 extra electrons to give away so as to attain its own stability.

The sulphur atom will gladly accept the two electrons which the magnesium atom wants to give away. This makes it the perfect element to be reacted with sulphur to make it attain its octet configuration

5 0
3 years ago
Choose all the answers that apply.
iogann1982 [59]

Answer:

All the options are correct except "has 7 electrons"

Explanation:

7 0
2 years ago
Read 2 more answers
A cup of gold colored metal beads was measured to have a mass 425 grams. By water displacement, the volume of the beads was calc
Troyanec [42]

Given parameters;

Mass of gold colored metal beads  = 425g

Volume of water displaced by beads = 48.0cm³

Unknown;

Identity of the metal = ?

Given densities;

Gold: 19.3 g/mL

Copper: 8.86 g/mL

Bronze: 9.87 g/mL

Density is an intensive property of any substance. This implies that we can use the density of any substance to identify it.

Density can be defined as the mass per unit volume of a substance. Every substance has a unique mass per volume.

 Mathematically;

                    Density  = \frac{mass}{volume}

where mass is in kg or g

           volume is in  m³ or cm³

To find the density, we must know the mass and volume.

In this problem, the volume of the gold metal beads is the same as the volume of water displaced. This is a way to measure volume of solids.

Since the volume is given in cm³, and we are comparing with choices that have units in g/mL, we simply convert the volume in cm³ to mL

                   1cm³  = 1mL³

So therefore, volume of gold colored metal is 48mL

Now input the parameters given and solve for the density;

           Density  = \frac{425g}{48mL }    = 8.85g/mL

From the given densities, we clearly see that copper is the metal since they both of similar densities.

4 0
3 years ago
As we increase the temperature of a liquid, its properties change. Which of the following would NOT be an expected change in the
taurus [48]

Answer: c. increase in surface tension

Explanation:

a) Viscosity : is defined as the resistance to the flow of a fluid. More are the inter molecular forces between the particles of a liquid, the more the viscosity of the liquid and thus it will flow slowly.

Viscosity decreases with increase in temperature as the forces among particles decrease due to increase in kinetic energy and thus they offer less resistance to flow.

c) Surface tension : is the downward force acting on the surface of liquid due to presence of inter molecular forces or cohesive forces between the particles of liquid.

Surface tension decreases with increase in temperature as the forces among particles decrease due to increase in kinetic energy.

d) Vapor pressure: Vapor pressure of a liquid  is defined as the pressure exerted by the vapors  in equilibrium with the solution at a particular temperature.

Vapor pressure increases with increase in temperature as the forces among particles decrease ad more particles can escape as vapors.

e) Evaporation is the the process in which liquid changes into gaseous state below its boiling point.

Evaporation increases with increase in temperature as the forces among particles decrease ad more particles can escape as vapors.

5 0
3 years ago
A methane burning formula. How many liters of oxygen is needed to bun 5l of methane?
Brilliant_brown [7]
C: 8 I’m pretty sure, I did partly the problem and that’s what I got! if correct pls heart this
7 0
2 years ago
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