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Novosadov [1.4K]
3 years ago
5

Use the data from the following figures to answer the questions below.

Chemistry
1 answer:
bixtya [17]3 years ago
3 0

Answer:

2.7g/cm³

Aluminum

Explanation:

Given parameters:

Mass of the cube  = 72.9g

Unknown:

Density of the cube = ?

Solution:

To solve this problem, we need to find the density of the cube. The mass is given and the dimensions of the solid figure.

Now;

       Density is the mass per unit volume of a substance

     Density  = \frac{mass}{volume}  

Volume of the cube  = L³  = 3³   = 27cm³

So;

     Density  = \frac{72.9}{27}   = 2.7g/cm³

The body is aluminum because it has a density of  2.7g/cm³

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What is the wavelength (in nm) of
LenKa [72]

Answer:

λ = 0.45×10⁻⁶ m

Explanation:

Given data:

Wavelength of blue light = ?

Frequency of blue light = 6.69×10¹⁴ s⁻¹

Solution:

Formula;

Speed of wave = wavelength × frequency

Speed of wave = 3.00×10⁸ m/s

by putting vales,

3.00×10⁸ m/s = λ × 6.69×10¹⁴ s⁻¹

λ = 3.00×10⁸ m/s / 6.69×10¹⁴ s⁻¹

λ = 0.45×10⁻⁶ m

6 0
3 years ago
26 Milkweed contains a poison known as cardenolides. Monarch butterflies eat the milkweed plant and hold on to this toxic compou
Amanda [17]

Cardenolides, with the chemical formula CH₁₈C₂₀H₁₅CHCO₂ have (D) 23 carbon atoms, 34 hydrogen atoms, and 2 oxygen atoms.

Milkweed contains a poison known as cardenolides. The chemical formula for cardenolides CH₁₈C₂₀H₁₅CHCO₂.

The subscripts in the formula represent the atomicities, that is the number of atoms of each element in each part of the formula.

We can calculate the total number of atoms of each element by adding its atomicities.

<h3>Carbon atoms</h3>

C =  1 + 20 + 1 + 1 = 23

<h3>Hydrogen atoms</h3>

H = 18 + 15 + 1 = 34

<h3>Oxygen atoms</h3>

O = 2

Cardenolides, with the chemical formula CH₁₈C₂₀H₁₅CHCO₂ have (D) 23 carbon atoms, 34 hydrogen atoms, and 2 oxygen atoms

Learn more: brainly.com/question/13348838

5 0
3 years ago
Why does lithium form only lithium oxide and not peroxide or superoxide ​
Alexandra [31]

Answer:

Lithium does form a peroxide as well as an oxide on burning in air and I suspect the low temperature reaction with air forms a significant amount of peroxide.

8 0
3 years ago
In the cases where no electric current flowed, do compounds form atoms, molecules or lattices in solution?
dsp73

Answer: 28

Explanation:a=d+a

8 0
2 years ago
Two copper electrodes dipped in copper sulphate solution are connected to the end of the battery marked with a ''_'' is:
guajiro [1.7K]

Answer:

d) catión

Explanation:

8 0
3 years ago
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