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inna [77]
3 years ago
8

What element is used in light bulbs as a filament???? help rly need help

Chemistry
1 answer:
frutty [35]3 years ago
6 0
The answer would just be:
<span>Tungsten
</span>hope that this helps you! =)
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This is a chemistry question that i don't know how to do. Need some help
koban [17]
C₀=8.10M
c₁=5.28M
v₀=1.58 L
v₁-?

n=c₀v₀=c₁v₁

v₁=c₀v₀/c₁

v₁=8.10*1.58/5.28=2.42 L 
5 0
3 years ago
A student pours 44.3 g of water at 10°C into a beaker containing 115.2 g of water at 10°C. What are the final mass, temperatur
Agata [3.3K]

Answer:

Final mass = 159.5 g

Final temperature = 10 C

Final density = 1.00 g/ml

Explanation:

<u>Given:</u>

Beaker 1:

Mass of water = 44.3 g

Temperature = 10 C

Beaker 2:

Mass of water = 115.2 g

Temperature = 10 C

Density of water at 10C = 1.00 g/ml

<u>To determine:</u>

The final mass, temperature and density of water

<u>Calculation:</u>

Final\ mass\ of \ water = Beaker\ 1 + Beaker\ 2 = 44.3 + 115.2 = 159.5 g

Since there is no change in temperature, the final temperature will be 10 C

Density of a substance is an intensive property i.e. it is independent of the mass. Hence the density of water will remain constant i.e. 1.00 g/ml

3 0
3 years ago
When heating a flammable or volatile solvent for a recrystallization, which of these statements are correct? More than one answe
Citrus2011 [14]

Answer:

You should not use an open flame to heat the solvent and the solvent should be heat in a stoppered flask to vapour away from the open flame

Explanation:

6 0
3 years ago
Read 2 more answers
You are watching the Indy 500 car race on television with your brother. He says, "Did you know that these cars race at a speed o
madam [21]

Answer:

See explanation

Explanation:

All physical quantities are broadly classified into scalar quantities and vector quantities.

Scalar quantities have magnitude but do not have direction. Vector quantities have both magnitude and direction. Hence the main difference between a scalar quantity and a vector quantity is that a vector has direction while a scalar quantity does not.

Speed is a scalar quantity while velocity is a vector quantity. You have just specified a magnitude of 200 mph without mentioning its direction. This implies that you are referring to speed of the cars in the race and not velocity because velocity of the cars must indicate the direction!

8 0
3 years ago
If the number of atoms of each element in the products equals the number of atoms of each element in the reactant the equation i
Misha Larkins [42]

<u>Answer:</u> The correct answer is Option b.

<u>Explanation:</u>

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another. Every balanced chemical equation follows law of conservation of mass.

This also states that total number of atoms of each element on the reactant side must be equal to the total number of atoms of each element on product side.

From the above information, the correct answer is Option b.

7 0
3 years ago
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