Answer: for an object or gas or liquid to float in another there must be a difference in density
Explanation:
Helium has a density of 0.18 kg/m³ and air has a density of 1.29 kg/m^³. If a balloon is filled with helium it will float in air due to density differences
Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces
The percentage error is given by multiplying relative error by 100%.
Therefore, to get the percentage error we need relative error which is given by dividing the absolute error with the actual value.
Absolute error = 0.133
Percentage error = 0.133/5.586 × 100%
= 2.38%
The percentage error is therefore; 2.38%
Answer:
If 500.0 mL of 0.450 M sodium phosphate is reacted with an excess of iron (II) nitrate solution, how many grams of iron (II) phosphate are produced?
idk
Explanation:
Answer:
I think it's (a.crushing waves)
Answer:
Empirical formula is Au₂O₃
Explanation:
Given data:
Percentage of oxygen = 11%
Percentage of gold = 89%
Empirical formula = ?
Solution:
Solution:
Number of gram atoms of O = 11 / 16 = 0.69
Number of gram atoms of Au = 89 / 197 = 0.45
Atomic ratio:
Au : O
0.45/0.45 : 0.69 /0.45
1 : 1.5
Au : O = 1 : 1.5
Au : O = 2( 1 : 1.5)
Empirical formula is Au₂O₃.
