Balance this equation Hgo

Atoms that have the same number of outer electrons...

telo118 [61]

Answer:

d.) belong to the same family of elements

Explanation:

All atoms of elements present in same group having same number of valance electrons. Thus the elements in same group having same properties.

For example:

Consider the second group. It consist of alkaline earth metals. There are six elements in second group. Beryllium, magnesium, calcium, strontium, barium and radium.

All have two valance electrons.

Electronic configuration of Beryllium:

Be = [He] 2s²

Electronic configuration of magnesium.

Mg = [Ne] 3s²

Electronic configuration of calcium.

Ca = [Ar] 4s²

Electronic configuration of strontium.

Sr = [Kr] 5s²

Electronic configuration of barium.

Ba = [Xe] 6s²

Electronic configuration of radium.

Ra = [ Rn] 7s²

7 0

3 years ago

Although HCl and H2SO4 have very different properties as pure substances, their aqueous solutions possess many common properties

yarga [219]

Answer:

Below are some general properties of these (HCl and H2SO4) solutions, and their common behavior in terms of the species present.

Explanation:

1) Aqueous solutions of these acids have a sour taste. i.e they can destroy body tissue and materials.

2) Both acids react with active metals and release hydrogen gas, H2.

Recall, in terms of an activity series. Metals above hydrogen in the series undergo displacement reactions with these acids. For example

2Na + 2HCl ------- 2NaCl + H2

and 2Na + H2SO4 ------- Na2SO4 + H2

3) The acids will react with bases to produce salts and water. These are neutralization reaction s and the products are water and an ionic compound called a salt. For example

NaOH + HCl --------- NaCl + H2O

2NaOH + H2SO4 ---------- Na2SO4 + 2H2O

7 0

2 years ago

During a solvent extraction, a student lost track of which layer was the aqueous layer and which layer was the organic layer. Wh

KatRina [158]

Answer:

a. add a little distilled water to see which layer the water adds to

Explanation:

The problem tells us to keep in mind two major aspects of the test: It has to be simple, as well as non-destructive:

Adding distilled water can be made in under a minute, without requiring specialized laboratory equipment, unlike IR.
It is also non-destructive, because the contents on either layer won't change due to the added distilled water.

4 0

3 years ago

Read 2 more answers

What are the reactants to burning paper and the products

posledela

CO2 (carbon) is the main product that results from burning paper. The paper is the reactant When paper burns in a fire, the reactants are mostly carbon (the main substance in the paper) and oxygen (from the air).Co2 If paper is loaded with CaCO3 such as cigarette paper, CaCO3 decompose in to CaO and CO2

3 0

2 years ago

BH+ClO4- is a salt formed from the base B (Kb = 1.00e-4) and perchloric acid. It dissociates into BH+, a weak acid, and ClO4-, w

Len [333]

Answer:

The pH of 0.1 M BH⁺ClO₄⁻ solution is 5.44

Explanation:

Given: The base dissociation constant: $K_{b}$ = 1 × 10⁻⁴, Concentration of salt: BH⁺ClO₄⁻ = 0.1 M

Also, water dissociation constant: $K_{w}$ = 1 × 10⁻¹⁴

The acid dissociation constant ( $K_{a}$ ) for the weak acid (BH⁺) can be calculated by the equation:

$K_{a}. K_{b} = K_{w}$

$\Rightarrow K_{a} = \frac{K_{w}}{K_{b}}$

$\Rightarrow K_{a} = \frac{1\times 10^{-14}}{1\times 10^{-4}} = 1\times 10^{-10}$

Now, the acid dissociation reaction for the weak acid (BH⁺) and the initial concentration and concentration at equilibrium is given as:

Reaction involved: BH⁺ + H₂O ⇌ B + H₃O+

Initial: 0.1 M x x

Change: -x +x +x

Equilibrium: 0.1 - x x x

The acid dissociation constant: $K_{a} = \frac{\left [B \right ] \left [H_{3}O^{+}\right ]}{\left [BH^{+} \right ]} = \frac{(x)(x)}{(0.1 - x)} = \frac{x^{2}}{0.1 - x}$