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3 years ago

What is a substance that that is made up of one type of atom compound

1 answer:

Natasha2012 [34]3 years ago

8 0

A substance cannot be a gas or a mixture. A pure<span> substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made.

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What are all the ways that you think knowing about the flow of energy might be useful in

Kaylis [27]

Yes the main benifit can be recyclation of energy

The example can be seen in powerbanks or inverters
The chemical energy present inside the battery can be used to convert itself into electric energy.
Which can help us in climate protection

4 0

2 years ago

The work function is the energy that must be supplied to cause the release of an electron from a photoelectric material. The cor

vladimir2022 [97]

Answer:

No photoelectric effect is observed for Mercury.

Explanation:

From E= hf

h= Plank's constant

f= frequency of incident light

Threshold Frequency of mercury= 435×10^3/ 6.6×10^-34 × 6.02×10^23

f= 11×10^14 Hz

The highest frequency of visible light is 7.5×10^14. This is clearly less than the threshold frequency of mercury hence no electron is emitted from the mercury surface

3 0

3 years ago

What is the difference between a cation and an anion?

zmey [24]

An anion has a negative charge, while a cation has a positive charge.

3 0

3 years ago

What is it called when liquid changes state to a gas?

Viefleur [7K]

Boiling point
i hope this helps.

6 0

3 years ago

2. A sample of oxygen gas is placed in a rigid 1.5L glass container at STP. If the gas is

sladkih [1.3K]

The new pressure : P₂ = 1038.39 mmHg

<h3>Further explanation</h3>

Given

1.5 L container at STP

Heated to 100 °C

Required

The new pressure

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure).

So P₁ = 1 atm = 760 mmHg

T₁ = 273 K

T₂ = 100 °C+273 = 373 K

Gay Lussac's Law

When the volume is not changed, the gas pressure is proportional to its absolute temperature

$\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}$

Input the value :

P₂=(P₁.T₂)/T₁

P₂=(760 x 373)/273

P₂ = 1038.39 mmHg

7 0

2 years ago