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MA_775_DIABLO [31]
3 years ago
7

What makes landing the hot air balloon a challenge?

Chemistry
1 answer:
Mariana [72]3 years ago
7 0
You have to think about the fact that hot air is constantly being blown up elevating the balloon once that air is taken away it's up to the steering and the wind after that. I know that probably doesn't help did you want to know the science part? 
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Consider the following equation in chemical equilibrium. C2H4(g) H2(g) C2H6(g) 137 kJ What happens to the amount of ethane (C2H6
Crank

The amount of ethane decreases

increasing the temperature (adding energy), will drive the reaction to the left

<h3>What happens to the amount of ethane (C2H6) when the temperature of the system is increased ?</h3>

C2H4(g) <--> C2H6(g) + 137 kJ

because this reaction is an exothermic reaction and the heat is a product of this reaction, So when the number of temperature increases

  • so (more heat will be added) so the reaction will go leftward (toward reactants ) so the amount of C2H4 & H2 will increase and the amount of ethane C2H6 will decrease.

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8 0
2 years ago
What is the mole fraction of sulfuric acid in a solution made by adding 34 g of sulfuric acid (H2SO4 = 98 g/mol) to 100 g of wat
sladkih [1.3K]

Answer:

Mole Fraction  =  0.059

Explanation:

To find the mole fraction, you need to (1) convert grams H₂SO₄ and H₂O to moles (via molar mass) and then (2) calculate the mole fraction.

(Step 1)

Molar Mass (H₂SO₄): 98 g/mol

34 grams H₂SO₄            1 mole
--------------------------  x  -------------------  =  0.347 moles H₂SO₄
                                      98 grams

Molar Mass (H₂O): 18 g/mol

100 grams H₂O              1 mole
-------------------------  x  --------------------  =  5.56 moles H₂O
                                      18 grams

(Step 2)

                                             moles solute
Mole Fraction  =  -------------------------------------------------
                               moles solute + moles solvent

                                              0.347 moles H₂SO₄
Mole Fraction  =  -----------------------------------------------------------
                               0.347 moles H₂SO₄ + 5.56 moles H₂O

Mole Fraction  =  0.059

7 0
2 years ago
Which element(s) would you expect to behave similarly to Gadolinium? What properties of would you expect to be the same, what wo
OverLord2011 [107]

The elements in the lanthanide series are similar to gadolinium.

The periodic table is arranged in groups and periods. Elements in the same group have similar properties. At the bottom row of the periodic table lies a group of elements that have unique properties called the lanthanides. This is where Gadolinium belongs.

The elements in the lanthanide series such as europium and terbium are similar to gadolinium. The lanthanides are similar in chemical reactivity and appearance. However, the density of the metals differ because it increases with increase in atomic number.

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8 0
3 years ago
How does the number of osmoles factor in when trying to calculate the molar mass of a substance?
Tom [10]

To calculate the molar mass of substance, divide the number of moles by the given mass of substance.

The quantity of a substance is known as a mole. You can measure it in terms of grams, liters, atoms, molecules, or particles.

Use the substance's molar mass to convert between grams and moles. Divide the given mass by the number of moles to convert from moles to molar mass.

Using the formula, Number of moles = Given mass/ molar mass

The molar mass of a substance can be calculated as-

Molar mass = Given mass/number of moles

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7 0
2 years ago
In the electron configuration [ar]4s23d104p4, which are valence electrons?
Zigmanuir [339]
2,10,4 are valence electrons
7 0
3 years ago
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