Answer:
1) 72 mole
2)1152 mole
3)256 mole
4) 2890 mole
Explanation:
very important for u
number of mole= given mass/molecular mass
symbolically : n= m/Mm
1) first atomic mass (carbon =12)
n=6gram × 12gram /mole
n=72mole
2) atomic mass (Magnesium =24)
48 gram × 24 gram /mole
n= 1152 mole
3)atomic mass (oxygen = 16×2=32
n= 8 gram × 32 gram/ mole
n= 256mole
4) atomic mass ( Nitrogen =14 , hydrogen = 1×3
14+3=17
n= 170 gram × 17 gram / mole.
n= 2890 mole
Answer:
Explanation:
an atom consists of prontons electrons and neutrons.
The nucleus is positively charged proven by the Rutherford experiment. The protons and neutrons are in the nucleus so the charges cancel out. The electrons are surrounded in the shells that are negatively charged.
false all element when they are combined eachother thier valance number will change
the combination of oxygen and aluminum gives us Al2O3 see even the numbers are changing thank you if you have a comment you can write
<u>0.549 mol</u> of citric acid are in 1.50 qt of lemon juice (d = 1.09 g/mL) that is 6.82% citric acid.
<h3>What is citric acid?</h3>
Citric acid is an organic compound with a chemical formula of . It is a weak organic acid that is colourless. Citrus fruits naturally produce it. It is a biochemical intermediary in the citric acid cycle, which is a process that all aerobic organisms go through during metabolism.
Every year, more than two million tonnes of citric acid are produced. It is frequently employed as a chelating agent, an acidifier, and a flavouring
Citrates, which include salts, esters, and the polyatomic anion present in solution, are derivatives of citric acid. Trisodium citrate is an example of the former; triethyl citrate is an example of an ester.
Learn more about Citric acid
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Answer:
1.62 × 10⁻³ M s⁻¹
Explanation:
Let's consider the following reaction.
2 NO₂ + F₂ = 2 NO₂F
The generic rate law is:
rate = k × [NO₂]ᵃ × [F₂]ᵇ
where,
- a and b: reaction orders with respect to the reactants
The reaction is first order in NO₂ and first order in F₂ and the rate constant is k = 1.58 × 10⁻⁴ M⁻¹ s⁻¹.
The rate law is:
rate = 1.58 × 10⁻⁴ M⁻¹ s⁻¹ × [NO₂] × [F₂]
When [NO₂] = 2.84 M and [F₂] = 3.60 M, the reaction rate is:
rate = 1.58 × 10⁻⁴ M⁻¹ s⁻¹ × 2.84 M × 3.60 M
rate = 1.62 × 10⁻³ M s⁻¹