1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vaselesa [24]
3 years ago
11

What is common to all elements in the same group on the periodic table? Their properties are very different.

Chemistry
2 answers:
Mrac [35]3 years ago
7 0
Hello,

<span>B.They have the same number of valence electrons. </span>
sattari [20]3 years ago
7 0
B. They have the same number of valence
You might be interested in
In a lab experiment 80.0 g of ammonia [NH3] and 120 g of oxygen are placed in a reaction vessel. At the end of the reaction 72.2
valentinak56 [21]

The percent yield of the reaction : 89.14%

<h3>Further explanation</h3>

Reaction of Ammonia and Oxygen in a lab :

<em>4 NH₃ (g) + 5 O₂ (g) ⇒ 4 NO(g)+ 6 H₂O(g)</em>

mass NH₃ = 80 g

mol NH₃ (MW=17 g/mol):

\dfrac{80}{17}=4.706

mass O₂ = 120 g

mol O₂(MW=32 g/mol) :

\tt \dfrac{120}{32}=3.75

Mol ratio of reactants(to find limiting reatants) :

\tt \dfrac{4.706}{4}\div \dfrac{3.75}{5}=1.1765\div 0.75\rightarrow O_2~limiting~reactant(smaller~ratio)

mol of H₂O based on O₂ as limiting reactants :

mol H₂O :

\tt \dfrac{6}{5}\times 3.75=4.5

mass H₂O :

4.5 x 18 g/mol = 81 g

The percent yield :

\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\\%yield=\dfrac{72.2}{81}\times 100\%=89.14\%

6 0
3 years ago
A single atom of an element has 21 nutrons 20 electtons and 20 protons which element is it
guajiro [1.7K]

your element would be calcium


7 0
3 years ago
What is the mRNA for TTGACAAGTTAC
sertanlavr [38]

Answer:

What is the question? I don't understand what you are trying to say.

3 0
2 years ago
32. Barium sulfate, BaSO4, is a white crystalline solid that is insoluble in water. It is used by doctors to diagnose
DIA [1.3K]

Answer:

42

Explanation:

bygyytrdesf

7 0
2 years ago
Which protists lack cilia and flagella, but can still move around?
timama [110]

Answer: amoebae !

Explanation:

3 0
3 years ago
Other questions:
  • Changing the number of _____ would change an atom into an atom of a different element
    8·2 answers
  • In which situation is maximum work considered to be done by a force?
    7·1 answer
  • What principle requires that a chemical equation be balanced?
    13·1 answer
  • Imagine there are heavy rainfalls for days.the river near the area starts to overflow.erosion starts to take place.explain what
    8·2 answers
  • Kinetic or potential energy.
    7·2 answers
  • What is ΔG° at 298 K for the following equilibrium? Ag+(aq) + 2NH3(aq) Ag(NH3)2+(aq); Kf = 1.7 × 107 at 298 K a. 41 kJ b. 0 c. –
    11·2 answers
  • PLEASE BE QUICK!!!!! Which of the following describes how the circulatory and the digestive systems help to maintain homeostasis
    7·1 answer
  • Plsssssssssssssssssssssssssssssssssssssssss help me
    7·1 answer
  • Can you tell me any chemical reaction that occur due to kinetic energy( with equation)​
    15·1 answer
  • What are atoms held together by
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!