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liq [111]
3 years ago
6

IF CORRECT ILL GIVE BRAINLIEST

Chemistry
1 answer:
Lynna [10]3 years ago
4 0

Answer:

Hydrogen = element

Carbon dioxide = compound

Water = compound

Zinc = element

Nitrogen = element

Salt = compound

Helium = element

Carbon monoxide = compound

Explanation:

An element and a compound are different when it comes to the types of atoms they possess. An element has only<u><em> one type of atom</em></u> while a compound has <u><em>two types of atoms.</em></u> For example, Hydrogen is an element because it has two atoms of the same type and that is, the "Hydrogen atom."

On the contrary, Carbon dioxide has<u><em> one carbon atom</em></u> and<u><em> two atoms for Oxygen.</em></u> Therefore, it is a compound because it has two types of atoms: <u><em>Carbon atom</em></u> and <em><u>Oxygen atom.</u></em>

Water has<u><em> two atoms of Hydrogen </em></u>and<u><em> one atom of Oxygen</em></u>. Therefore, it is a compound because it has two types of atoms: <u><em>Hydrogen atom</em></u> and <u><em>Oxygen atom</em></u>.

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ehidna [41]
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8 0
3 years ago
I need help yall ill mark brainliest :)
garri49 [273]

Answer:

How does non-human life in an urban ecosystem differ from that in an undeveloped forest ecosystem?

Explanation:

In forest eco system the people are uncivilized and not so much educated. And in urban eco system people are intelligent as well as educated this is the main reason. In an urban ecosystem, the only non-human life that live there are the ones that are able to survive under the conditions. However, in undeveloped forest ecosystems, there’s barely any pollution. Therefore, a bigger variety of non-human life is able to live here.

Mark brainliest if you can please :)

3 0
3 years ago
What is the volume of 0.20 moles of helium at STP?
stealth61 [152]

The volume of 0.20 moles of helium at STP is 4.5 liters.

Explanation:

Given:

Number of moles  = 0.20 moles

To Find:

The volume of Helium at STP =?

Solution:

According to ideal gas law

PV = nRT

where

P is pressure,  

V  is volume,  

n  is the number of moles  

R  is the gas constant, and  

T  is temperature in Kelvin.

The question already gives us the values for  p  and  T ,because helium is at STP. This means that temperature is  273.15 K  and pressure is  1 atm .

We also already know the gas constant. In our case, we'll use the value of  

0.08206 L atm/K mol  since these units fit the units of our given values the best

On substituting these values we get

1 atm \times  V = 0.20 moles  \times  0.08206 L atm/K mol

V = \frac{0.20 moles  \times  0.08206 L atm/K mol }{ 1 atm}

V = \frac{4.482}{1}

V =  4.5 Liters

7 0
3 years ago
What do a mole of magnesium (Mg) and a mole of iron (Fe) have in common?
azamat
What they have in common is that they both have the same number of atoms.
9 0
3 years ago
Sulfur,Iodine,.Carbon,Hydrogen put these lowest to highest
natima [27]

Answer:

The order is Hydrogen, Carbon, Sulfur, Iodine

Explanation:

According to the periodic table. The order is Hydrogen, Carbon, Sulfur, Iodine. You can search up an image of a periodic table, it will help you.

7 0
3 years ago
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