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ipn [44]
3 years ago
14

Which change is most likely to occur when a molecule of h2 and a molecule i2 collide with proper orientation and sufficient ener

gy?
Chemistry
2 answers:
Alekssandra [29.7K]3 years ago
6 0

Answer: Formation of hydrogen iodide will occur.

Explanation:

When molecule of hydrogen gas (H_2) and molecule of iodine gas (I_2) collide with proper orientation and with sufficient amount of energy. This collision of the two different molecules of gases will result in the formation of hydrogen iodide.

The balanced chemical equation of the reaction will written as:

H_2(g)+I_2(g)\righarrow 2HI(g)

Maksim231197 [3]3 years ago
5 0
The answer to this question would be: chemical changes

When two elements collide, the can react if the structure of the atoms allows it to be combined into a bigger molecule and there is enough energy. In this case, the hydrogen(H2) collides with iodine(I2) would be able to create HI molecule. This change is called chemical changes since it changes the element into a different molecule.
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Adrenaline gives you energy and stimulates your heart. When in stressful situations, like survival, you’re body is reacting and releasing this hormone.
8 0
2 years ago
Which statement is true about the atomic mass?
nikdorinn [45]

the correct answer is A.

Each atom has three sub particles, which are electron, proton and neutron. To get the atomic mass for each atom, one has to add the masses of the proton, neutron and electron in an atom. For each atom, the major contributors to its mass are proton and neutron, this is because the mass of the electron is very small indeed. Thus, the atomic mass of an element is usually in the range of its mass number, which is obtained by the summation of proton and neutron. Since it is the number of proton that indicate an atomic number and it is the mass number that indicate atomic mass, therefore, atomic mass can be greater than the atomic number.

3 0
3 years ago
Read 2 more answers
Describe Chemical and physical changes of ice water placed in the refrigerator
Talja [164]
So in a chemical change, the product would loses its properties, would form new products and would not be easily reversed.


In a physical change, the products WILL NOT lose any of their properties, WILL NOT form any new products and WILL be easily reversed.

Talking about Water turning to ice I would say it’s all about physical change and not chemical change.
But I would suggest you to either make a research about it or ask your teacher :))
6 0
3 years ago
A rock weighing 75.0g is placed in a graduated cylinder displacing the volume from 31.4 ml to 36.5ml. What is the density of the
denis-greek [22]

Answer:

<h2>14.71 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

volume = final volume of water - initial volume of water

volume = 36.5 - 31.4 = 5.1 mL

But

1 mL = 1 cm³

5.1 mL = 5.1 cm³

From the question we have

density =  \frac{75}{5.1}  \\  = 14.705882..

We have the final answer as

<h3>14.71 g/cm³</h3>

Hope this helps you

8 0
3 years ago
Vinegar is an aqueous solution of acetic acid, ch3cooh. a 5.00 ml sample of a particular vinegar requires 26.90 ml of 0.175 m na
Fed [463]

  The molarity  of  acetic acid in the  vinegar is  0.94 M


 <u><em> calculation</em></u>

Step 1:  write  the balanced equation between CH3COOH  + NaOH

that is CH3COOH   + NaOH  →  CH3COONa  + H2O


step 2 :  find the moles of NaOH

moles  =molarity  x volume in L

volume in liters = 26.90/1000=0.0269 l

moles = 0.175 mol /L x 0.0269 L  =0.0047  moles  of NaOH


Step 3: use the mole  ratio to find moles of CH3COOH

that is the  mole ratio of  CH3COOH: NaOH is 1:1 therefore  the moles of CH3COOH is  =0.0047  moles


Step 4:  find the  molarity  of  CH3COOH

molarity = moles/volume in liters

volume in liter = 5.00/1000 =0.005 l

molarity  is therefore=0.0047 moles/ 0.005 l = 0.94 M

4 0
3 years ago
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