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3 years ago

What is the difference between traits and characteristics?

1 answer:

4 0

A Characteristic is the unique assets, talents, and qualities of a person. On the other hand, a trait is a feature of a person that is hereditary or inherited from parents or offspring. The characteristics are usually something that a person can learn and built by absorption, a trait, on the other hand, is something you have since birth.

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Which of the following would be the best empirical evidence of the cycling of water in a terrarium?

sergejj [24]

B. Healthy Plants is the answer

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3 years ago

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In the laboratory you dissolve 23.8 g of manganese(II) nitrate in a volumetric flask and add water to a total volume of 125 . mL

AleksandrR [38]

Answer:

The correct answer is 1.06 M

Step-by-step explanation:

We have to calculate the molarity (M), which is:

M= moles solute/ 1 L solution.

The chemical formulae of manganese (II) nitrate is Mn(NO₃)₂. So, we first calculate its molecular weight (Mw) as follows:

Mw(Mn(NO₃)₂)= molar mass Mn + (2 x molar mass N) + (6 x molar mass N)= 55 g/mol + (2 x 14 g/mol) + (6 x 16 g/mol) = 179 g/mol

Then, with Mw we calculate the number of moles there is in the given mass of Mn(NO₃)₂:

moles Mn(NO₃)₂= mass/Mw= 23.8 g/(179 g/mol)= 0.133 mol

Now, we need the final volume in liters, so we convert the volume from mL to L:

125 mL x 1 L/1000 mL = 0.125 L

Finally, we divide the moles of Mn(NO₃)₂ into the volume in L, to obtain the molarity in mol/L:

M= 0.133 moles/0.125 L = 1.06 mol/L= 1.06 M

7 0

3 years ago

How many pi bonds are formed when sp2 hybridization occurs in ethene, C2H4?

marin [14]

Answer:

Explanation:

There is one pi bond and one sigma bond between the carbon atoms.

6 0

3 years ago

2 H2 + O2 → 2 H2O 1) How many moles of H2O are produced when 5 moles of oxygen are used?

mylen [45]

Answer:

We'll produce 10 moles of H2O if 5 moles of O2 are used

Explanation:

Step 1: Data given

Number of moles oxygen = 5.0 moles

Step 2: The balanced equation

2H2 + O2 → 2H2O

Step 3: Calculate number of moles of H2O produced

For 2 moles H2 we need 1 mol O2 to produce 2 moles H2O

For 5.0 moles O2 we'll need 2*5 = 10 moles H2 to produce 2*5 = 10 moles H2O

We'll produce 10 moles of H2O if 5 moles of O2 are used

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4 years ago

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Explain, in terms of electron configuration why atoms of the radioisotope produced by the sixth decay in the U-238 disintegratio

Troyanec [42]

Answer:

The reason they don't react is because Elements with full octets are stable, the Elements with no unpaired electrons do not react at all in the decay.

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3 years ago