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Alenkinab [10]
3 years ago
9

I NEED HELP FAST PLEASE *please answer correctly* Will mark brainliest thank you!!

Chemistry
2 answers:
Dimas [21]3 years ago
8 0

Answer:

i dont know that plzzz help me tooooo

yKpoI14uk [10]3 years ago
5 0

Answer:

Explanation:

Using Charles Law ,

\frac{V1}{T1}=\frac{V2}{T2}

Using this formula we have ,

V1= 200cm^3

T1=40+273.15 = 313.15 K

T2 = 100+273.15 = 373.15 k

V2= ?

Hence using above formula simplify it we will get ,

V2 = 238.3 cm^3

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Volcano experiment
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3 0
4 years ago
Pierce conducts an experiment in which waves collide in a way that the energy increases, which means that has occurred
Vikki [24]
<h2>Answer:</h2>

It means the waves collides and constructive interference occurred.

<h3>Explanation:</h3>

If the two waves coming from the opposite direction collide with each other, there are two way of their interference.

  • Constructive interference: An interference which results in the increase in energy. And it is when crust of a wave comes on the crust of second wave.
  • Destructive interference: An interference which results in decrease in energy of the resulting wave and colliding waves cancel the result of each other.

Hence in experiment there will be constructive interference.

8 0
3 years ago
Read 2 more answers
Complete the sentences about heme. Some terms will not be used. The prosthetic group of hemoglobin and myoglobin is . The organi
nevsk [136]

Explanation:

Haemoglobin consists of heme unit which is comprised of an <u>Fe^{2+}</u> and porphyrin ring. The ring has four pyrrole molecules which are linked to the iron ion. In oxyhaemoglobin, the iron has coordinates with four nitrogen atoms and one to the F8 histidine residue and the sixth one to the oxygen. In deoxyhaemoglobin, the ion is displaced out of the ring by 0.4 Å.

The prosthetic group of hemoglobin and myoglobin is - <u>Heme</u>

The organic ring component of heme is - <u>Porphyrin</u>

Under normal conditions, the central atom of heme is - <u>Fe^{2+}</u>

In <u>deoxyhemoglobin</u> , the central iron atom is displaced 0.4 Å out of the plane of the porphyrin ring system.

The central atom has <u>six</u> bonds: <u>four</u> to nitrogen atoms in the porphyrin, one to a <u>histidine</u> residue, and one to oxygen.

7 0
3 years ago
What occurs when potassium reacts with chlorine to form potassium<br> chloride?
marissa [1.9K]
Chlorine gas reacts to potassium bromide to form potassium chloride in solution and liquid bromine.

I hope this helps/answers your question! I vaguely remember getting this question before too
5 0
3 years ago
What is the emperical formula of a compound containing 40.1% carbon and 6.6% hydrogen​
levacccp [35]

Answer:

CH₂

Explanation:

Given parameters:

Percentage composition:

          Carbon  = 40.1%

          Hydrogen  = 6.6%

Unknown:

Empirical formula of the compound  = ?

Solution:

The empirical formula of a substance is its simplest formula.

 Elements                             Carbon                             Hydrogen

Percentage

Composition                           40.1                                     6.6

Molecular mass                        12                                         1

Number of moles                  40.1/12                                  6.6/1

                                                3.342                                    6.6

Divide through by

the smallest                         3.342/3.342                           6.6/3.342

                                                      1                                        2

So the empirical formula of the compound is CH₂

5 0
3 years ago
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