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Novay_Z [31]
2 years ago
12

Now draw the eight planets as circles, and label each one. The scale doesn’t need to be perfect. You can estimate the planets’ s

izes based on the real-world objects you chose in part A.

Chemistry
2 answers:
Brut [27]2 years ago
4 0
The answer is Joe mamma
Ierofanga [76]2 years ago
3 0

i dont now but thaks you po por the pionts

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How many molecules of carbon tetrafluoride, CF4, are in 176 grams of CF4?
RUDIKE [14]

Answer:

1.2*10^24 molecules of CF4

Explanation:

the molar mass of cf4 is 88.0043 g/mol

176/88.0043 = 2 moles of CF4

Then multiply by avogadro's number (6.022*10^23) to get the number of molecules

2*6.022*10^23 = 1.2*10^24 molecules of CF4

5 0
2 years ago
How many atoms are in a 1.8 mol sample of Magnesium (Mg)?
Gnom [1K]

Answer:

1.1 × 10²⁴ atoms Mg

General Formulas and Concepts:

<u>Atomic Structure</u>

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

<u>Stoichiometry</u>

  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

<em>Identify</em>

[Given] 1.8 mol Mg

[Solve] atoms Mg

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

Avogadro's Number

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                       \displaystyle 1.8 \ mol \ Mg(\frac{6.022 \cdot 10^{23} \ atoms \ Mg}{1 \ mol \ Mg})
  2. [DA] Multiply [Cancel out units]:                                                                      \displaystyle 1.08396 \cdot 10^{24} \ atoms \ Mg

<u>Step 4: Check</u>

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

1.08396 × 10²⁴ atoms Mg ≈ 1.1 × 10²⁴ atoms Mg

5 0
3 years ago
Read 2 more answers
One phosphorus, three chlorine, one oxygen
4vir4ik [10]
Phosphoryl chloride :

POCl3
<span>
hope this helps!.

</span>
5 0
3 years ago
CHEMISTRY HELP!: 10 pts.
katovenus [111]
Because of different chemical reactions between the elements<span />
5 0
2 years ago
Read 2 more answers
The magnesium atom in chlorophyll A. is used to pass excited electrons on to pheophytin B. is coupled to the production of ATP C
goblinko [34]

Answer:

B. is coupled to the production of ATP

Explanation:

The magnesium in chlorophyll acts as an activator of enzymes associated with energy metabolism, especially respiratory enzymes and others that act on phosphorylated substrates such as ATP.

7 0
3 years ago
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