A cyclone rotates faster and faster as pressure differences between areas of low and high pressure increases
Answer:
178 grams
Explanation:
<em>It is known that 1.0 mole of a compound contains Avogadro's number of molecules (6.022 x 10²³).</em>
<em><u>Using cross multiplication:</u></em>
1.0 mol contains → 6.022 x 10²³ molecules.
??? mol contains → 6.3 x 10²⁴ molecules.
∴ The no. of moles of (6.3 x 10²⁴ molecules) of NH₃ = (1.0 mol)(6.3 x 10²⁴ molecules)/(6.022 x 10²³ molecules) = 10.46 mol.
<em>∴ The no. of grams of NH₃ present = no. of moles x molar mass</em> = (10.46 mol)(17.0 g/mol) = <em>177.8 g ≅ 178 g.</em>
Answer:
Salt's ions and sugar's polar bonds are both attracted to the polar water molecules.
Explanation:
Water is regarded as a universal solvent because of its ability to dissolve more substances than any other liquid. This unique property of water is attributed to its POLAR NATURE. Water is a polar molecule and hence, most if not all polar substances will dissolve in it.
Although salt and sugar are substances that have different types of chemical bonding in their structure but they both dissolve in water. This is because they are both polar substances and hence, their polar charges are attracted to the polar molecules of water. This attraction causes an interaction and subsequently dissolution.
Answer:
They represent the valence electrons, so s and p sublevels only! This does not include the d block!
