Answer:
What is the formula for a compound that contains 64.75 g nitrogen and 185.25 g oxygen? D. N2O5
The name of a hydrate is calcium chloride dihydrate. What is its formula? B. CaCl2 x 2H20
Explanation:
BRAINLIEST PLZZZZ
3 moles of NaOH reacts with 1 mole of phosphoric acid.
<h3>What is the moles ratio of the NaOH and Phosphoric acid reaction?</h3>
The moles ratio of the reaction between NaOH and Phosphoric acid is given by the equation of the reaction below:
Based on the equation of the reaction, 3 moles of NaOH reacts with 1 mole of phosphoric acid.
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Answer:
Option d.
1 mole AlCl3in 500 g water
Explanation:
ΔT = Kf . m . i
Freezing T° of solution = - (Kf . m . i)
In order to have the lowest freezing T° of solution, we need to know which solution has the highest value for the product (Kf . m . i)
Kf is a constant, so stays the same and m stays also the same because we have the same moles, in the same amount of solvent. In conclussion, same molality to all.
i defines everything. The i refers to the Van't Hoff factor which are the number of ions dissolved in solution. We assume 100 & of ionization so:
a. Glucose → i = 1
Glucose is non electrolytic, no ions formed
b. MgF₂ → Mg²⁺ + 2F⁻
i = 3. 1 mol of magnessium cation and 2 fluorides.
c. KBr → K⁺ + Br⁻
i = 2. 1 mol potassium cation and 1 mol of bromide anion
d. AlCl₃ → Al³⁺ + 3Cl⁻
i = 4. 1 mol of aluminum cation and 3 mol of chlorides.
Kf . m . 4 → option d will has the highest product, therefore will be the lowest freezing point.
Answer:
The neck, Tongue, Heart and circulation and Lungs.
Explanation:
The Neck: The total length of the giraffe's neck is 6 feet and carries the muscles of about 550 pounds. But the unique characteristics is that it has same vertebrae as humans have i.e. 7. And to support these heavy muscles at the base of the neck spines are there projecting upwards.
The Tongue: Giraffe has a very avaricious long tongue that helps it to gets different vegetation.
Heart: Surprisingly the heart of the giraffe is small in structure yet powerful. And the blood pressure is quite high, double relatively to human so to pump the blood to its brain along with the long neck.
