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
Deffense [45]
2 years ago
8

Tính số nguyên tử oxi

Chemistry
1 answer:
kow [346]2 years ago
8 0

Answer:

please what do you mean

Explanation:

explain please

You might be interested in
What happens to the atoms during a chemical reaction
Likurg_2 [28]

Answer:

Atoms get rearranged and make up different molecules. No atoms are created nor destroyed.

Explanation:

6 0
2 years ago
How many grams are in 2.3 x 1024 formula units of KNO3?
Harlamova29_29 [7]
<h2>Answer:</h2>

390 g KNO₃

<h2>General Formulas and Concepts:</h2><h3><u>Chemistry</u></h3>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<h3><u>Math</u></h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right
<h2>Explanation:</h2>

<u>Step 1: Define</u>

2.3 × 10²⁴ formula units KNO₃

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of K - 39.10 g/mol

Molar Mass of N - 14.01 g/mol

Molar Mass of O - 16.00 g.mol

Molar Mass of KNO₃ - 39.10 + 14.01 + 3(16.00) = 101.11 g/mol

<u>Step 3: Convert</u>

<u />2.3 \cdot 10^{24} \ formula \ units \ KNO_3(\frac{1 \ mol \ KNO_3}{6.022 \cdot 10^{23} \ formula \ units \ KNO_3} )(\frac{101.11 \ g \ KNO_3}{1 \ mol \ KNO_3} ) = 386.172 g KNO₃

<u>Step 4: Check</u>

<em>We are given 2 sig figs. Follow sig fig rules and round.</em>

386.172 g KNO₃ ≈ 390 g KNO₃

5 0
3 years ago
What is definition "scientific question"?
Lemur [1.5K]

Answer:

A scientific question is basically a question that can lead to a hypothesis to help us figure out the observation in science. I hope this helps you

4 0
2 years ago
Read 2 more answers
Arc AB is One-sixth of the circumference of a circle. What is the radian measure of the central angle?
soldi70 [24.7K]

Answer:

?

Explanation:

7 0
2 years ago
Read 2 more answers
An area has experienced weathering and erosion for many years. Over time, some rock formations have been left behind forming pea
Anni [7]

Answer:

D.

Explanation:

The rock that is left behind is there because it has resisted the forces of erosion.

6 0
2 years ago
Other questions:
  • how does the relationship between carbon monoxide and carbon dioxide illustrate the law of multiple proportions
    12·1 answer
  • Our bodies are penetrated by x-rays but not by visible light. Is this because x-rays travel faster than visible light? Yes or no
    14·1 answer
  • Human fat has a density of 0.918 g/cm^3. How much volume (in cm^3) is gained by a person who gains 10.1 lbs of pure fat?
    13·1 answer
  • In the presence of dry sulfuric acid at 100 degree c, salicylic acid can react with itself to form a water-insoluble precipitate
    12·1 answer
  • How many moles of sodium bicarbonate are in 1.50 kg of the compound?
    14·1 answer
  • Why will the conjugate base of a weak acid affect pH? Select the correct answer below: it will react with hydroxide
    12·1 answer
  • What is the molality of solution prepared by dissolving 21.7g KCl in 225g of water?
    5·2 answers
  • Solve for it?<br><br><br>show all work for me as well please ASAP!!​
    10·1 answer
  • One liter of gas A at 1.0 atm pressure has a temperature of 25°C while the same volume and pressure of gas B has a temperature o
    8·1 answer
  • What volume, in liters, would 88.9 grams of a substance occupy if it’s density is 2.38 g/mL
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!