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Monica [59]
3 years ago
11

Question 5

Chemistry
1 answer:
Nonamiya [84]3 years ago
6 0

Answer:

chemical change

Explanation:

burning and cooking are both chemical changes.

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The atomic number of argon is 18. will argon tend to form bonds with other elements? explain your answer.
koban [17]
Argon atoms would not tend to make bonds with other atoms since it is classified as a noble atom which means it has a complete filled subshells. It does not have any electrons that are available for bonding. Noble gases belong to the Group 8A in the periodic table of elements. All of the elements in this group do have a complete or filled electron orbitals which makes them so stable or the s and p outer electron shells are complete with electrons. All of them follows the octet rule. Thus, they do not need any sharing or transfer of electrons from other compounds for them to be more stable.
8 0
3 years ago
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What is the mass of 0.46 mol of MgCl2
Ronch [10]

Answer:

43.7

Explanation:

mole is equal mass concentration/ moler mass of MgCl²

8 0
4 years ago
Convert a speed of 141 mi/h to units of feet per minute show work.
ozzi

Answer:

12408 feet per minute

Explanation:

Given: Speed is 141 mi/h

To find: speed in units of feet per minute

Solution:

Use the following units to convert the given speed into feet per minute.

1 mile = 5280 foot

1 h = 60 minutes

Therefore,

141 mi/h =\frac{141(5280)}{60} =12408 feet per minute.

3 0
3 years ago
Do you no the 5 major dairy groups​
SOVA2 [1]

I can only think of four and i dont even know if these are correct but milk, cheese, ice cream, and yogurt sorry if i'm incorrect

4 0
4 years ago
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A 4.5 liter sample of a gas at 2 atm and 300 K has 0.80 mole of gas. If 0.35 mole of the gas is added to the sample at the same
Elis [28]

Answer:

6.5 liters​.

Explanation:

  • We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

  • If P and T are constant, and have different values of n and V:

<em>(V₁n₂) = (V₂n₁)</em>

<em></em>

  • Knowing that:

V₁  = 4.5 L, n₁ = 0.80 mol,

V₂  =  ??? L, n₂ = 0.35 + 0.80 = 1.15 mol.

  • Applying in the above equation

<em>(V₁n₂) = (V₂n₁)</em>

<em></em>

<em>∴ V₂ = (V₁n₂)/n₁ </em>= (4.5 L)(1.15 mol)/(0.8 mol) = <em>6.469 L ≅ 6.5 L.</em>

<em></em>

<em>So, the right choice is: 6.5 liters​.</em>

6 0
3 years ago
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