Colligative properties are properties that depends on ratio of the number of solute to the number of solvent . Colligative properties are essentially solvent properties that are changed by the presence of solute . The solute particles displaces some solvent molecules in the liquid phase and therefore reduce the concentration of solvent. So basically colligative properties are independent of the nature of the solute.
D acid and bases are the same
Answer: Beta decay occurs when a nucleus is unstable because it has too many or too few neutrons relative to protons. The nucleus emits a beta particle and energy. In beta-minus decay, a neutron breaks down to a proton and an electron, and the electron is emitted from the nucleus.
Explanation:
Answer:
8.73
Explanation:
when you are adding or subtracting numbers, the sigfig (significant figure) is based on how many numbers after the decimal. with this info, we can see that 15.67 has 2 sigfigs and 6.943 has 3 sigfigs. when you subtract normally, you would get 8.727, which has 3 sigfigs, so you would round the last 7 up to get 8.73 with 2 sigfigs!
also it is to 2 sigfigs because we know that we go by the least number of sigfigs. hope this helped!
Answer:
C₂H₃O₂
Explanation:
Assume that you have 100 g of the compound.
Then you have 40.68 g C, 5.08 g H, and 54.24 g O.
1. Calculate the <em>moles of each element</em>.
Moles of C = 40.68 × 1/12.01 = 3.387 mol C
Moles of H = 5.08 × 1/1.008 = 5.010 mol H
Moles of O = 54.24 × 1/16.000 = 3.390 mol O
===============
2. Calculate the <em>molar ratios</em>.
Divide all values by the smallest number.
C: 3.387/3.387 = 1
H: 5.010/3.387 = 1.479
O: 3.390/3.387 = 1.001
===============
3. <em>Multiply each ratio by 2
</em>
C: 2 × 1 = 2
H: 2 × 1.479 = 2.958
O: 2 × 1.001 = 2.002
===============
4. Determine <em>the empirical formula</em>
Round off all numbers to the closest integer.
C: 2
H: 3
O: 2
The empirical formula is C₂H₃O₂.
