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3 years ago

The universe displays _____.

Chemistry

2 answers:

stiks02 [169]3 years ago

7 0

ITS B) THE FULL SPECTRUM OF LIGHT

EXPLANATION:

Orlov [11]3 years ago

4 0

Answer:

B) the full spectrum of light

Explanation:

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Explain in your own words how telescopes are valuable tools for seeing the full range of the electromagnetic spectrum. Use evide

DochEvi [55]

Answer: Well isn't it supposed to be in YOUR own words not someone else's.?.?.

Explanation:

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3 years ago

Practice Problem #2: How many atoms of Ba are in 7.8 moles of Ba?

andriy [413]

$7.8 \: mol = \frac{6.02 \times {10}^{23} atoms}{1 \: mol} = 4.6956 \times {10}^{24} \: atoms$

round as you wish.

4 0

3 years ago

2.92 A 50.0-g silver object and a 50.0-g gold object are both added

Trava [24]

Answer:

82.9 mL

Explanation:

1. Volume of silver

$\begin{array}{rcl}\text{Density}&=& \dfrac{\text{Mass}}{\text{Volume}}\\\\\rho&=& \dfrac{m}{V}\\\\V &=& \dfrac{m}{\rho}\\\\& = & \dfrac{\text{50.0 g}}{\text{10.49 g$\cdot$mL}^{-1}}\\\\& = & \text{4.766 mL}\\\end{array}\\\text{The volume of the silver is $\large \boxed{\textbf{4.766 mL}}$}$

2. Volume of gold

$\begin{array}{rcl}V& = & \dfrac{\text{50.0 g}}{\text{19.30 g$\cdot$mL}^{-1}}\\\\& = & \text{2.591 mL}\\\end{array}\\\text{The volume of the gold is $\large \boxed{\textbf{2.591 mL}}$}$

3. Total volume of silver and gold

V = 4.766 mL + 2.591 mL = 7.36 mL

4 New reading of water level

V = 75.5 mL + 7.36 mL = 82.9 mL

3 0

4 years ago

In a piece of metal, what holds the atoms together?

Aleks [24]

Answer:

Explanation:

the positive charges of the nuclear and the negative charges of delocalized electrons

8 0

3 years ago

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What is malic acid and phosphoric acid?

fomenos

Answer:

It is used to make medicine. People take malic acid by mouth for tiredness and fibromyalgia. In foods, malic acid is used as a flavoring agent to give food a tart taste. In manufacturing, malic acid is used to adjust the acidity of cosmetics.

Explanation:

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3 years ago

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