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deff fn [24]
4 years ago
8

Element used in bright flashlights

Chemistry
1 answer:
Mazyrski [523]4 years ago
8 0
The element would be Neon. They are found in signs
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How is the density of an irregular object found
solniwko [45]
It is found by measuring how much water you first put in their best way is with a graduated cylinder then put in your object and see how much the water went up by.
3 0
3 years ago
Determine the molecular formula of decene, which has an empirical formula of CH2 and a molar mass of 140.27 g/mol.
mart [117]

Answer:

Molecular formula = C₁₀H₂₀

Explanation:

Given data:

Empirical formula = CH₂

Molar mass = 140.27 g/mol

Molecular formula = ?

Solution:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

Now we will calculate the empirical formula mass.

CH₂ = 12 × 1 + 1× 2

CH₂ = 12 +2

CH₂ = 14  

n = 140.27 / 14

n = 1 0

Molecular formula = n (empirical formula)

Molecular formula = 10 (CH₂)

Molecular formula = C₁₀H₂₀

5 0
3 years ago
How many atoms of sodium are in 3.80 mol of sodium, Na?
vova2212 [387]

Answer:

2.29 × 10²⁴ atoms Na

Explanation:

Step 1: Define

Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units, etc.

Step 2: Stoichiometry

3.80 \hspace{3} mol \hspace{3} Na(\frac{6.02(10)^{23} \hspace{3} atoms \hspace{3} Na}{1 \hspace{3} mol \hspace{3} Na} ) = 2.2876 × 10²⁴ atoms Na

Step 3: Simplify

We have 3 sig figs.

2.2876 × 10²⁴ atoms Na ≈ 2.29 × 10²⁴ atoms Na

3 0
4 years ago
Features passed from parent to offspring, such as eye color, is an example of what?
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3 years ago
Glucose is a product of photosynthesis. where do the carbon atoms in glucose come from?
sineoko [7]
Carbon atoms in glucose come from carbon dioxide.
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3 years ago
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