1) first, write the balanced equation:
2KOH + H₂SO₄ ---> 2H₂O + K₂SO₄
2) convert grams of sulfuric acid to mole using it's molar mass.
molar mass H₂SO₄= (2 x 1.01) + 32.0 + (4 x 16.0)= 98.0 g/mol
2.70 grams (1 mol/ 98.0 grams)= 0.0276 moles
3) use the mole to mole ratio from the balanced equation to change the moles of sulfuric acid to moles of potassium, hydroxide (KOH).
ration--->2 mol KOH = 1 mol H₂SO₄
0.0276 mol H₂SO4 (2 mol KOH/ 1 mol H₂SO₄)= 0.0551 mol KOH
4) convert moles to grams using the molar mass of KOH
molar mass of KOH= 39.1 + 16.0 + 1.01= 56.1 g/mol
0.0551 mol (56.1 grams/ 1 mol)= 3.09 grams
Answer:
The positive particles were deflected due the concentrated positive charge of the atom
Explanation:
Rutherford concluded that the positive particles were deflected through an angle greater than 90 due to electrostatic force of repulsion between the particles and positive part of the atom.
Answer:
The objects should be far apart. There must be air circulation. The objects need to be touching. Solar energy is required.
Explanation:
Answer:
1.09 mL
Explanation:
Density is a measure of a substance's mass over its volume.
d = m/v
We can rearrange the equation to solve for volume, using algebra.
v = d/m
Therefore v = 6.35/5.80 = 1.09 mL
