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zysi [14]
4 years ago
14

2 Polnts

Chemistry
2 answers:
Marina CMI [18]4 years ago
7 0

Answer:

In chemistry, a symbol is an abbreviation for a chemical element. Symbols for chemical elements normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.

Earlier symbols for chemical elements stem from classical Latin and Greek vocabulary. For some elements, this is because the material was known in ancient times, while for others, the name is a more recent invention. For example, Pb is the symbol for lead (plumbum in Latin); Hg is the symbol for mercury (hydrargyrum in Greek); and He is the symbol for helium (a new Latin name) because helium was not known in ancient Roman times. Some symbols come from other sources, like W for tungsten (Wolfram in German) which was not known in Roman times.

Explanation:

Lubov Fominskaja [6]4 years ago
3 0

Answer: B

Explanation:

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If 14.5kj of heat were added to 485g of liquid water, how much would its temp increase
OlgaM077 [116]
<span>7.15 degrees C The specific heat capacity of water is 4.1813 J/(g*K). So we have 3 values with the units kJ, g and J/(g*K). We can trivially convert from kJ to J by multiplying by 1000. And we want to get a result with the unit K (degrees Kelvin). So let's do it. First, let's cancel out the g unit by multiplying. 4.1813 J/(g*K) * 485 g = 2027.9305 J/K Now we can cancel out the J unit by dividing. But if we divide by the energy, we'll be left with the reciprocal of K, not K. So instead divide by the J/K unit. So 14500 J / 2027.9305 J/K = 7.150146418 K Rounding to 3 significant figures gives us 7.15 K. And since degrees C and degrees K are the same size, the temperature will increase by 7.15 degrees C</span>
6 0
3 years ago
HURRY ILL GIVE BRAINLIEST! <br> Match the cause to its effect.
Natasha2012 [34]

Answer:

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Explanation:

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4 0
3 years ago
(Based on q = -sm∆T)
vekshin1

Answer:

Sn < Brass ≈ Zn <   Al  

Step-by-step explanation:

                      Sn   < Brass  ≈   Zn   <   Al

C/J·°C⁻¹g⁻¹: .0.246 <  0.418 ≈ 0.419 < 0.734

3 0
3 years ago
The law of conservation of mass states that
Vesnalui [34]
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. Thus, the amount of matter cannot change.
5 0
3 years ago
Read 2 more answers
Help out please I really don’t understand these
gavmur [86]
In English

7. Name the elements found in nature in diatomatic form.

8. What is the difference between double and triple single link?
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