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2 years ago

What would the products of a double-replacement reaction between Na2S

Physics

1 answer:

MAVERICK [17]2 years ago

8 0

Answer:

A. NaF and MgS

Explanation:

The reaction equation is given as:

Na₂S + MgF₂ → 2NaF + MgS

The product of this reaction is NaF and MgS.

In a double displacement reaction there is an actual exchange of partners to form new compounds. This reaction takes place between ionic compounds.

The driving force for the reaction is:

formation of an insoluble precipitate
formation of water or any other non-ionizing compound
liberation of a gaseous product.

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Evgen [1.6K]

To help fight off disease and viruses

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2 years ago

A ladybug sits 14 cm from the center of a turntable spinning at 33.33 rpm. The Sun is shining horizontally through the window an

kolbaska11 [484]

Answer:

The maximum velocity is 0.489 m/s

Explanation:

Maximum velocity (v) = angular velocity (w) × radius (r)

w = 33.33 rpm = 33.33×0.1047 = 3.4897 rad/s

r = 14 cm = 14/100 = 0.14 m

v = 3.4897×0.14 = 0.489 m/s

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2 years ago

Assuming the average rate of heat energy flowing outwards from earth to be 0.063 W/m2 calculate the energy available at a hot sp

MaRussiya [10]

Answer:

"13.48 Kwhr" is the right solution.

Explanation:

The given values are:

Average rate of heat energy,

= 0.063 W/m²

Diameter,

= 8m

Efficiency of conversion,

= 50%

Now,

The area of hotspot will be:

⇒ $A=\frac{\pi}{4} d^2$

On substituting the values, we get

⇒ $=\frac{3.14}{4} (8)^2$

⇒ $=0.785\times 64$

⇒ $=50.24 \ m^2$

Total heat generation rate will be:

⇒ $Q=q\times A$

$=0.063\times 50.24$

$=3.16 \ W$

hence,

The electricity generation capacity will be:

⇒ $P=\eta Q t$

On substituting the values, we get

⇒ $=0.5\times 3.16\times 8760$

⇒ $=13840.8 \ Whr$

On converting into Kwhr, we get

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6 0

2 years ago

Explain why increasing the mass of a car affects how the car rolls down a ramp.

Irina-Kira [14]

F = ma (force = mass x acceleration)

So the car’s mass affects the amount of force, changing how it would roll down a ramp, I think.

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3 years ago

Read 2 more answers

Work done= ________ transferred

mamaluj [8]

Answer:

Work done= Energy transferred

Explanation:

Work is the transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. If you put energy into an object, then you do work on that object (mass).

4 0

2 years ago