Answer:
Cesium and Neon
Explanation:
Remember, Neon is a noble gas, also called an inert gas. It does not react really to form compounds. Although chlorine is only one column to the left of neon, it is very reactive and ready forms a salt when combine with sodium. The other elements have similar reactivities to each other. Only Neon is a non-reactive choice.
Answer:
Nitrate is considered SOLUBLE
Explanation:
please kindly refer to attachment for the step by step solution of the given problem.
Answer:
if a mixture of a given percentage or ratio strength is diluted to twice its original quantity, its active ingredient will be contained in twice as many parts of the whole, and its strength therefore will be reduced by one-half
Answer:
Empirical formula is CH₂O.
Molecular formula = C₆H₁₂O₆
Explanation:
Given data:
Mass of hydrogen = 3.36 g
Mass of carbon = 20.00 g
Mass of oxygen = 26.64 g
Molar mass of compound = 180.156 g/mol
Empirical formula = ?
Molecular formula = ?
Solution:
Empirical formula:
It is the simplest formula gives the ratio of atoms of different elements in small whole number
Number of gram atoms of H = 3.36 / 1.01 = 3.3
Number of gram atoms of O = 26.64 / 16 = 1.7
Number of gram atoms of C = 20 / 12 = 1.7
Atomic ratio:
C : H : O
1.7/1.7 : 3.3/1.7 : 1.7/1.7
1 : 2 : 1
C : H : O = 1 : 2 : 1
Empirical formula is CH₂O.
Molecular formula:
Molecular formula = n (empirical formula)
n = molar mass of compound / empirical formula mass
Empirical formula mass = CH₂O = 12×1 + 2× + 16
Empirical formula mass = 30
n = 180.156 / 30
n = 6
Molecular formula = n (empirical formula)
Molecular formula = 6 (CH₂O)
Molecular formula = C₆H₁₂O₆
1.For each of the following, give the name of an element from Period 4 (potassium to krypton), which matches the description.
Elements may be used once, more than once or not all.. Single line text.
(1 Point)
an element that reacts with water to produce a lilac flame
2.For each of the following, give the name of an element from Period 4 (potassium to krypton), which matches the description.
Elements may be used once, more than once or not all.. Single line text.
(1 Point)
an element used as an inert atmosphere
3.For each of the following, give the name of an element from Period 4 (potassium to krypton), which matches the description.
Elements may be used once, more than once or not all.. Single line text.
(1 Point)
an element that has a valency of 3
4.Write a balanced chemical equation for the reaction between potassium and water. (Non-anonymous question). .
(1 Point)
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5.For each of the following, give the name of an element from Period 4 (potassium to krypton), which matches the description.
Elements may be used once, more than once or not all.. Single line text.
(1 Point)
an element with a fixed valency of 2 that not is not in group 2
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