Answer:
one valence electron
Lithium has a single electron in the second principal energy level and so we say that lithium has one valence electron. Beryllium has two valence electrons.
- Lumen Learning
Answer:
the Mercury planet is likely to have life but the earth as a lot of oxygen
Answer:
X linked recessive
Explanation:
Being an X linked recessive a disorder is more prevalent in males as compared to females because a single X chromosome in male is able to expresses the trait.
In case of female untill unless there are two sets of X linked recessive allele, there will be no disorder. Infact most of the women are carrier only
CH₄(g) + 3 Cl₂(g) → CHCl₃(g) + 3 HCl(g)
From the equation we notice that 1 mole of methane produces 1 mole of chloroform:
16 g Methane → 119.38 g Chloroform
? g Methane → 37.5 g Chloroform
by cross multiplication:
= (16 * 37.5) / 119.38 = 5.0 g methane
Answer is: chemical.
If the arrangement of particles is changed, that is chemical change or chemical reaction (new substance is formed).
In physical change, the bonds between oxygen and hydrogen can not be separated.
For example, balanced chemical reaction: 2Mg(s) + O₂(g) → 2MgO(s).
Chemical changes (chemical synthesis) is when a substance combines with another (in this example magnesium and oxygen) to form a new substance.
