Answer
The correct answer is:
b. dipole-dipole
Explanation:
The IMF molecules are linked by Van der Waals forces, which are permanent but dipole-dipole junctions.
If the interactions are molecules that are permanently polarized (for example, water molecules that attract other water molecules or other polar molecules), they are found as Keesom forces.
Hi,
The density is given by the ratio of mass to volume, so the density of the bread is 645g/3450cm3=0.187 g/cm^3.
Hope this helps! If my answer was not clear enough or you’d like further explanation please let me know. Also, English is not my first language, so I’m sorry for any mistakes.
Answer:
3 significant zeroes
Explanation:
To count the number of significant figures, you must pass the zeroes until you reach a non-zero value. Once you reach it, count anything after that as significant values, including the non-zero value itself.
The number has 4 significant figures with 3 significant zeroes.
Hope this helps!!!
Quantitative data is always numerical, like measurements or counts of things. Qualitative data is categorical, like descriptions and names. The type of shape is qualitative, and the mass is quantitative.
1 mole of NaHCO3 = 84g
1 mole of NaHCO3--------------84g
x moles of NaHCO3----------0,50g
x = 0,00595 moles of NaHCO3
0,00595 moles of NaHCO3----------in--------250ml
x moles of NaHCO3-------------------in-----------1000ml
x = 0,0238 moles of NaHCO3
answer: the molar <span>concentration of NaHCO3 is 0,0238mol/l</span>