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nordsb [41]
3 years ago
10

What happens to wood when it burns?

Chemistry
1 answer:
scoundrel [369]3 years ago
8 0

Answer:

Explanation:When wood is burned, oxygen and other elements in the air (mainly carbon, hydrogen and oxygen) react to form carbon dioxide that is released into the atmosphere, while the minerals turn into ashes. ...

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What is one of the names for a column in the periodic table?
zheka24 [161]

Answer:

row, period, group

Explanation:

8 0
3 years ago
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Three moles of oxygen gas is stored in a 2.5-liter container at 35°C. What is the pressure of this gas?
nadezda [96]

Answer:

The pressure of the gas is 30.3072 atm.

Explanation:

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

In this case:

  • P= ?
  • V= 2.5 L
  • n= 3 moles
  • R= 0.082 \frac{atm*L}{mol*K}
  • T= 35 C= 308 K (being 0 C= 273 K)

Replacing:

P* 2.5 L= 3 moles* 0.082 \frac{atm*L}{mol*K} *308 K

Solving:

P=\frac{ 3 moles* 0.082 \frac{atm*L}{mol*K} *308 K}{2.5 L}

P= 30.3072 atm

<u><em>The pressure of the gas is 30.3072 atm.</em></u>

4 0
3 years ago
Which phrases apply to metamorphic rock formation? Check all that apply.
Talja [164]

Answer:

Explanation:

3rd

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2 years ago
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How many grams and moles of gold are present in 8.09 x 10^28 atoms of gold?
Blizzard [7]

Answer:

Explanation:

how many grams and moles of gold are present in 8.09 x 10^28 atoms of gold?

there are 6.02 x 10^23 molecules or atoms in 1 mole

of a compound or element

8.09 x 10^28 /(6.02 x 10^23) = 1.34 x 10^5 moles of Au

1 mole of gold (see periodic table for #79) 197 g

so 1.34 x 10^5 moles of Au weigh

197 x 1.34 x 10^5 = 2.64 x 10^7 g

your little gold treasure is worth

Gold Price Per Gram $59.87 x 2.64 x 10^7=

$$$$ 1.58 x 10^9

=$ 1,580,000,000

4 0
2 years ago
Deploying an airbag in an automobile is a complex process. Identify at least three steps in the process. Refer to your research
gavmur [86]

Answer:

1) The car must have an accelerometer and airbag circut.

2) Chemical explosive of enough sodium azide to fill the bag when ignited

3) Airbag can be covered in talcum powder to help it unwrap smoothly.

Explanation:

8 0
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