1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veronika [31]
3 years ago
12

Need a lil help here

Chemistry
2 answers:
Step2247 [10]3 years ago
7 0
OKKKKKKKKKKKKKKKKKKKKKK

harina [27]3 years ago
5 0

Answer:

im not the realest igga is the anwer

Explanation:

You might be interested in
2. Sodium reacts with oxygen to form sodium oxide and has the following balanced chemical equation: 4 Na + O2 --> 2 Na2O. Whe
Anastaziya [24]
5 gig hi iifvjifhnkgcghgggggggg
4 0
3 years ago
Read 2 more answers
PLEASE HELP <br> I do not understand
Vikentia [17]

Answer:

Absorbing beta particle because the beta is the numbers and are less and the  big numbers are positive and they are the alpha so when you add beta particle it is called Absorbing so the answer is Absorbing beta particle

4 0
2 years ago
Read 2 more answers
Moldear una plastilina es un cambio fisico o quimico.
Andrews [41]

Fisico

Explanation:

esto es debido a que el mismo no modifica la estructura química de la misma. ... Cambios químicos: son aquellos que producen un cambio en la estructura molecular de una sustancia, por lo general se producen mediante una reacción

6 0
3 years ago
The burning of magnesium is a highly exothermic reaction. How many kilojoules of heat are released when 0. 75 mol of Mg burn in
alexandr402 [8]

Taking into account the definition of enthalpy of a chemical reaction, the quantity of heat released when 0.75 moles of Mg are burned is 451.5 kJ.

<h3>Enthalpy of a chemical reaction</h3>

The enthalpy of a chemical reaction is known as the heat absorbed or released in a chemical reaction when it occurs at constant pressure. That is, the heat of reaction is the energy that is released or absorbed when chemicals are transformed into a chemical reaction.

The enthalpy is an extensive property, that is, it depends on the amount of matter present.

<h3>Heat released in this case</h3>

In this case, the balanced reaction is:

2 Mg(s) + O₂ (g) → 2 MgO(s) + 1204 kJ

This equation indicates that when 2 moles of Mg reacts with 1 mole of O₂, 1204 kJ of heat is released.

When 0.75 moles of Mg are burned, then you can apply the following rule of three: if 2 moles of Mg releases 1204 kJ of heat, 0.75 moles of Mg releases how much heat?

heat=\frac{0.75 moles of Mgx1204 kJ}{2 moles of Mg}

<u><em>heat= 451.5 kJ</em></u>

Finally, the quantity of heat released when 0.75 moles of Mg are burned is 451.5 kJ.

Learn more about enthalpy of a chemical reaction:

<u>brainly.com/question/15355361</u>

<u>brainly.com/question/16982510</u>

<u>brainly.com/question/13813185</u>

<u>brainly.com/question/19521752</u>

4 0
2 years ago
What do these two changes have in common?
Varvara68 [4.7K]

ok fine ill leave

Explanation:

5 0
2 years ago
Other questions:
  • What value of ℓℓ is not allowed for an electron in an n = 3 shell?
    13·1 answer
  • Geology belongs to which branch of science?
    6·2 answers
  • Protons are positively charged and repel other protons. Which order particle is found in the nucleus and separates protons so th
    6·1 answer
  • Question 1 of 10
    6·1 answer
  • Why use fire in the industrial revolution? <br><br><br><br> HELP PLEASE❤️❤️❤️
    6·1 answer
  • The majority of the elements in the Periodic Table are
    7·2 answers
  • Why does spoiled food produce foul smell ​
    15·2 answers
  • Which of the following best describes a single-replacement reaction?
    8·2 answers
  • A balanced chemical equation has the same number and type of atoms in the reactants as compared to the products. An unbalanced c
    7·1 answer
  • A Write a set of four quantum numbers possible for the circled electron in arsenic (As). (There could be more
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!