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Softa [21]
4 years ago
9

since butane is not found on the periodic table,how could you find the molar mass of butane(mass of one mole of butane molecules

)?
Chemistry
2 answers:
Mars2501 [29]4 years ago
6 0
All you do is add up the molar masses of the carbons and hydrogens in the formula. Most peiordic tables show the molar masses of elements (also called their molecular weights) underneath their chemical symbols. 

4(molar mass of carbon) + 10(molar mass of hydrogen) = 4(12.0107 g/mol) + 10(1.00794 g/mol) 

<span>= 58.1222 g/mol 


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!



</span>
Wittaler [7]4 years ago
3 0

We know, It's atomic formula = C4H10

Now, we know molar mass of C = 12 & H=1

so, it would be: 12*4+1*10 = 48+10 = 58

You might be interested in
What the answer for number 7
Alexus [3.1K]

Antimony Sb

Explanation:

The element that will have similar chemical properties with Arsenic As is element Antimony or Sb.

An element is a distinct substance that cannot be split-up  into simpler substances. They are made up of only one kind of atom.

  • The chemical properties of an element is determined mostly by the number of electrons in its outermost shell.
  • This is called the valency of an element.
  • Element having the same valency behaves the same way chemically.
  • They exchange the same number of electrons during chemical reaction.

Therefore, elements in the same group on the periodic table have the same chemical properties.

Elements in the same group have the same valency.

Anitmony and Arsenic belongs to group 5 on the periodic table. The elements in this group are Phosphorus, Arsenic, Antimony and Bismuth.

learn more:

Chemical properties brainly.com/question/2376134

#learnwithBrainly

7 0
3 years ago
According to the graph, if you are in a biome where the annual precipitation is about 300 cm and the average temperature is arou
alina1380 [7]

Answer:

We are in Tropical Rainforests.

Explanation:

Biome is basically an ecological region of earth that has specific type of flora and fauna (plants and animals). Every biome has specific abiotic factors like specific climate, temperature, geology, vegetation, soils and relief.

There are total 8 biomes in the world

  • Desert
  • Grassland
  • Temperate Boreal Forest  
  • Chaparral
  • Tropical Savanna
  • Tropical Rainforest
  • Tundra
  • Temperate Deciduous Forest

Now in our question, we have been given some conditions and are asked to identify the biome. The annual precipitation is about 300 cm and the average temperature is around 25 degrees Celsius.

Now, if we study the characteristics of all these biomes, it is very simple to identify that the biome is Tropical Rainforest.

Important characteristics of Tropical Rainforest:

  • They receive more than 200 cm of rain each year.
  • The temperature of the biome is between 20 degree Celsius and 25 degree Celsius during the whole year.
  • Around 50 percent of the animal specie of the world are found here.

<em>Note: </em><em>You can study the characteristics of world’s other biomes in the link : http://www.physicalgeography.net/fundamentals/9k.html </em>


Hope it helps!  :)


8 0
3 years ago
How many dm3 of hydrogen are released when 3 g of potassium is reacted with hydroiodic acid?
nlexa [21]

Answer:

V = 0.0859dm³

Explanation:

Hydroiodic acid, HI, reacts with potassium, K, to produce potassium iodide, KI, and hydrogen, as follows:

2HI + 2K → 2KI + H₂(g)

To solve this question we have to find the moles of hydrogen produced knowing that 2 moles of K produce 1 mole of H₂. With the moles of hydrogen we can find the volume of hydrogen assuming there are STP conditions:

<em>Moles K -Molar mass: 39.0983g/mol-</em>

3g * (1mol / 39.0983g) = 0.0767 moles of K

<em>Moles H₂:</em>

0.0767 moles of K * (1mol H₂ / 2mol K) = 0.03836 moles H₂

Using: PV = nRT; V = nRT / P

<em>Where V is volume in dm³,</em>

<em>n are moles of gas: 0.03836 moles,</em>

<em>R is gas constant = 0.082atm*dm³/molK</em>

<em>T is absolute temperature = 273.15K at STP</em>

<em>and P is pressure = 1atm</em>

The volume of the gas is:

V = 0.03836mol*0.082atm*dm³/molK*273.15K / 1atm

<h3>V = 0.0859dm³</h3>

8 0
3 years ago
You walk out to your car on a cold January day, and you notice that your tires appear to be flat. You take your car to the shop
Naddik [55]
The answer to this question would be the rate of change
4 0
3 years ago
In an electrically neutral atom,
Soloha48 [4]

Answer:

the number of protons equals the number of

electrons

Explanation:

Because these particles have the same but opposite charges, equal numbers cancel out, producing a neutral atom.

3 0
3 years ago
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