3 years ago

Explain why a halogen bulb has a longer bulb life than a traditional incandescent bulb filled with argon.

1 answer:

4 0

Answer:

The halogen bulb lasts longer because the filament lasts longer. It can have twice the life of an incandescent and use the same amount or slightly less (10%) electricity.

Explanation:

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A bar of copper has a mass of 216g and a volume of 24cm^3. What is the density of copper?

7nadin3 [17]

Answer:

<h2>The answer is 9 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 216 g

volume = 24 cm³

The density is

$density = \frac{216}{24} \\$

We have the final answer as

Hope this helps you

3 0

3 years ago

Which change would most likely increase the resistance in the circuit ?

yaroslaw [1]

Answer:

I think it would be C but don't quote me on it

Explanation:

It adds another obstacle for the current to go through

4 0

2 years ago

What is the first answer ?

QveST [7]

Answer:

d....

Explanation:

yes its d

sorry

7 0

3 years ago

C, h, o, n, p and s make up > 90% of all organic compounds. t or f?

Shtirlitz [24]

True is does make up 90 percent

5 0

3 years ago

Magnesium and nitrogen react in a combination reaction to produce magnesium nitride: 3 Mg + N2 → Mg3N2 In a particular experimen

Dafna11 [192]

Answer:

The mass of Mg consumed is 23.76 g.

Explanation:

Magnesium and nitrogen react as : three moles of magnesium reacts with one mole of nitrogen to give one mole of magnesium nitride.

as given that the mass of nitrogen reacted = 9.27 g

moles of nitrogen reacted = $\frac{mass}{molarmass}=\frac{9.27}{28}=0.33$

Thus moles of magnesium reacted = 3 X 0.33 = 0.99 moles

mass of Mg reacted = moles X atomic mass = 0.99 X 24 = 23.76 grams

5 0

3 years ago