they are male
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Answer:
Examples of Solids
1. Brick
2. coin
3. Iron bar
4. rock
5. wood
Examples of Liquids
1. Blood
2. Honey
3. Wine
4. Water
5. oil
Examples of Gases
A gas does not have a defined shape or volume, so it can expand to fill any size or shape of a container. Particles in gases are widely separated, compared to those in liquids and solids.
Explanation:
It's B. the positive logariuthm of the hydrogen ion concentra<span>tion</span>
Answer:
7.52767607125× 10^23 atoms
Explanation:
The Avogadro number/constant indicates that they are 6.022140857 × 10^23 number of units (atoms) in one mole of any substance. Therefore, in this case, ti find the number of atoms in 1.25 moles of calcium acetate, well multiply the two number;
6.022140857 × 10^23 * 1.25 = 7.52767607125× 10^23
Answer:
Li⁺, Na⁺ (group 1); N⁻³ (group 15)
Explanation:
Li and Na belong to group 1 of the periodic table so they coincide in the valence electrons which, being group 1, is a single electron.
They are very willing to lose it because they have little electronic affinity. In addition, both elements enter the alkali metal group (all of group 1)
They are cations, as they make ionic bonds.
N is an element from group 15. It is a nonmetal and has 5 electrons in its last layer as all the elements that make up its group, P, As, Sb so it would subtract 3 more electrons to have its last complete level and thus reach noble gas configuration.
Nitrogen can make covalent bonds, for example with O, where they form anions because it can gain electrons.
