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In-s [12.5K]
3 years ago
15

Placing a sample of iron (II) oxide into a graduated cylinder makes the water volume increase 12.0 mL. The weight of the sample

is 76.6 g. What is its density? (Round to the nearest hundredths) g/cm3​
Chemistry
1 answer:
vivado [14]3 years ago
4 0

Answer:6.38

Explanation:D=76.6/12

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Which has more energy pasta or an orange?
FromTheMoon [43]
The orange would have more energy since it used it to grow while the pasta was baked causing all its energy to leave it
3 0
3 years ago
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
How do the particles in matter change when a substance becomes hotter, cools down, or changes state
Archy [21]
Colder- moves slower
warmer- moves faster
changes state:
    solid to gas- warmer
    gas to solid- colder
    something like that
7 0
3 years ago
Convert the following to grams<br> 0.500 moles of (NH4)2CO3
steposvetlana [31]
Molar mass (NH₄)₂CO₃ = <span>96.09 g/mol

1 mole ---------> 96.09 g
0.500 moles ----> ?

0.500 * 96.09 = 48.045 g of </span><span>(NH₄)₂CO₃

hope this helps!

</span>
5 0
3 years ago
The force of 20 N acts upon a 5kg block. What is the acceleration of the block?
charle [14.2K]

Answer:

<h2>The answer is 4 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

where

a is the acceleration

f is the force

m is the mass

From the question

f = 20 N

m = 5 kg

We have

a =  \frac{20}{5}  \\

We have the final answer as

<h3>4 m/s²</h3>

Hope this helps you

8 0
3 years ago
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