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Serhud [2]
3 years ago
7

How do atoms form a new substance?

Chemistry
1 answer:
lubasha [3.4K]3 years ago
8 0
By sharing electeons with each other
if they lose or gain electrons then they only form ions
they cannot lose neutrons as they are locked inside the nucleus
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Which would be the best material to use for making tea kettles?
Wewaii [24]
It’s a subjective answer but glass is believed to be the most safe material to use for tea kettles
6 0
2 years ago
How many moles of Ca are in 3.75 x 10^25 atoms of Ca?
ioda
<h3>Answer:</h3>

62.3 mol Ca

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<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<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.75 × 10²⁵ atoms Ca

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

Avogadro's Number

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 3.75 \cdot 10^{25} \ atoms \ Ca(\frac{1 \ mol \ Ca}{6.022 \cdot 10^{23} \ atoms \ Ca})
  2. Multiply/Divide:                \displaystyle 62.2717 \ mol \ Ca

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

62.2717 mol Ca ≈ 62.3 mol Ca

7 0
2 years ago
According to 2011/Chemistry Reference Tables
Phoenix [80]

Answer:

C

Explanation:

C. The electronegativity value of calcium is lower than the electronegativity value of silicon

is the only correct statement.

4 0
3 years ago
What statement does not accurately describe the following equation? C6H12O6+---&gt;6H20+6CO2+energy A) oxygen is a react ant B)
STatiana [176]
The answer is B. The complete equation is C6H12O6 + 6O2 -->6H2O + 6CO2 + energy. So we can know that A and C and D is right. For B, the reaction release energy so it is exothermic reaction.
4 0
3 years ago
Read 2 more answers
40
kap26 [50]

Answer:

what you've asked so I guess the answer will be 10 days

8 0
2 years ago
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