Answers
Answer:
The less electronegative atom
Explanation:
Water contains polar bonds. Water is made up of oxygen and hydrogen. Oxygen is more electronegative then hydrogen so it is partial negative (because electron spend more time around oxygen in the polar bond), whereas, hydrogen has a partial positive charge as it is less electronegative (electrons spend less time around hydrogen in this polar bond).
Related Questions
Describe the range of radii of most atoms in nanometers (nm)
As the speed of the particles decreases, -a. Intermolecular forces become strongerb. Intermolecular forces become weakerc. Intermolecular forces do not changed. Energy increasesEngshusratoway
Energy travels in what direction?
A solution contains 1.694 mg CoSO4 (155.0 g/mol) per milliliter. Calculate (a) the volume of 0.08640 M EDTA needed to titrate a 25.00-mL aliquot of this solution. (b) the volume of 0.009450 M Zn2 needed to titrate the excess reagent after addition of 50.00 mL of 0.08640 M EDTA to a 25.00-mL aliquot of this solution.
Answers
Answer:
a) 1.866 × 10 ⁻¹⁹ J b) 3.685 × 10⁻¹⁹ J
Explanation:
the constants involved are
h ( Planck constant) = 6.626 × 10⁻³⁴ m² kg/s
Me of electron = 9.109 × 10 ⁻³¹ kg
speed of light = 3.0 × 10 ⁸ m/s
a) the Ek ( kinetic energy of the dislodged electron) = 0.5 mu²
Ek = 0.5 × 9.109 × 10⁻³¹ × ( 6.40 × 10⁵ )² = 1.866 × 10 ⁻¹⁹ J
b) Φ ( minimum energy needed to dislodge the electron ) can be calculated by this formula
hv = Φ + Ek
where Ek = 1.866 × 10 ⁻¹⁹ J
v ( threshold frequency ) = c / λ where c is the speed of light and λ is the wavelength of light = 358.1 nm = 3.581 × 10⁻⁷ m
v = ( 3.0 × 10 ⁸ m/s ) / (3.581 × 10⁻⁷ m ) = 8.378 × 10¹⁴ s⁻¹
hv = 6.626 × 10⁻³⁴ m² kg/s × 8.378 × 10¹⁴ s⁻¹ = 5.551 × 10⁻¹⁹ J
5.551 × 10⁻¹⁹ J = 1.866 × 10 ⁻¹⁹ J + Φ
Φ = 5.551 × 10⁻¹⁹ J - 1.866 × 10 ⁻¹⁹ J = 3.685 × 10⁻¹⁹ J
Answers
number of moles solute:
n = mass of solute / molar mass
n = 30 / 39.997
n = 0.00075 moles of NaOH
Volume in liters:
500 mL / 1000 => 0.5 L
Therefore :
M = moles of solute / volume ( L )
M = 0.00075 / 0.5
M = 0.0015 mol/L
Answer: 1.5 M
Explanation:
Answers
moles hydrocarbon = (2 moles O2)(2 moles HC / 7 moles oxygen)
Simplifying,
moles HC = 4/7 or 0.57 moles HC
Answer: 0.57 moles HC
2. The calculation for the mass of water is shown below with the dimensional analysis and conversion factors,
(30 g C2H6)1 mole C2H6/30 g C2H6)(6 molesH2O/2 moles C2H6)(18 g H2O/1 mole C2H6)
Simplifying,
mass = 54 grams of water
A FULL STEP EXPLANATION WILL BE APPRECIATED
Answers
The number of moles of iron needed to react with 16.0 moles of sulfur is 128.0 moles.
Calculation of number of moles of iron
Given equation, 8Fe + S8 = 8 FeS
Moles of sulfur = 16.0
To react 1 mole of sulfur, we need 8 moles of Fe
So, for 16.0 moles of sulfur we need
Thus, to react with 16.0 moles of Sulfur, 128.0 moles of Fe is needed.
Learn more about sulfur, here:
Answer:
To react with 16.0 moles of sulfur we need 128.0 moles of iron (Fe).
Explanation:
Step 1: Data given
Number of moles Sulfur = 16.0 moles
Step 2: The balanced equation
8 Fe + S8 → 8 FeS
Step 3: Calculate mole Fe
For 8 moles Fe we need 1 mol S8 to produce 8 moles FeS
For 16.0 moles of Sulfur we need 8*16.0 = 128.0 moles
To react with 16.0 moles of sulfur we need 128.0 moles of iron (Fe).
Answers
Answer:
Heterogeneous Mixture. Have a good day! =)
Explanation:
Answers
Answer
A. oxidation or reduction of an element
Explanation
A half reaction can be either oxidation or reduction reaction from a REDOX reaction.