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ycow [4]
4 years ago
8

How are the physical and chemical properties of atoms represented on the periodic table of elements

Chemistry
1 answer:
Debora [2.8K]4 years ago
8 0

Chemical properties of each elemt are determined by the elemts electroic configuration, and particulary by its outermost valence electrons. In addition, the total number of electron shells an atom determines which period it belongs to

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Name the following ketone:
alekssr [168]
A. cyclohexyne is the answer
5 0
3 years ago
A rigid canister holds 50.0 L of helium gas at 32.0°C and 49.9 kPa. The gas is cooled until the pressure reaches 14.2 kPa. What
xeze [42]

Answer:-

86.794 K

Explanation:-

Initial temperature T 1 = 32 C + 273 = 305 K

Initial Pressure P 1 = 49.9 KPa

New Pressure P 2 = 14.2 KPa

The Volume remains same since it is rigid.

∴V 1 = V 2 = 50.0 L

Using the relation

P 1 V 1 / T1 = P 2 V 2 / T 2

New temperature T 2 = P 2 V 2 T 1 / ( P 1 V 1)

= 14.2 KPa x 50.0 L x 305 K / ( 49.9 KPa x 50.0 L)

= 86.794 K

8 0
4 years ago
Why does mantle rock begin to sink back towards the lower mantle from the area closest to the crust?
Delvig [45]

Answer: Convection Currents

Explanation: The mantle rock is solid and denser because it is cooler. This means it will sink closer to lower mantle as warmer, lense dense rock/magma moves upwards.

8 0
3 years ago
Once you have completed your research, write a summary about what characterizes science and its methods. Identify a question tha
Yuki888 [10]

Answer:

- Scientific question: does life exist on other planets?

- Non-scientific question: there are aliens that look like people?  

Explanation:

A scientific question is a coherent question that can be used to develop a scientific hypothesis. Thus, a scientific question must be testable, verifiable, measurable and relevant to the topic of study. In the scientific method, the hypothesis is subsequently tested by experimental or observational procedures, where the results can be used to understand some particular aspect of the real world. On the other hand, a non-scientific question is a light conjecture which cannot be proved by using the scientific method.

8 0
3 years ago
A. How many Joules of energy are required to raise 3.50kg of water from 38.5 to 75.0C ? (specific heat of water is 4.184J/g C)(1
DochEvi [55]

a.

A substance's specific heat tells you how much heat is required to increase the temperature of 1 g of that substance by 1°C.

The equation that establishes a relationshop between heat and change in temperature is

q = m • c • ∆T, where

q - heat absorbed

c - the specific heat of the substance, in your case of water

ΔT - the change in temperature, defined as the difference between the final temperature and the initial temperature

so:

q = 1.00 g • 4.18 J/g×°C • (75.0 - 38.5)°C

q = 152,57 J

just apply this formula for all exercises

7 0
2 years ago
Read 2 more answers
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