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
Arte-miy333 [17]
3 years ago
8

Potassium has four energy levels. how many energy levels do you predict calcium, iron, nickel, and zinc will have? answer

Chemistry
1 answer:
tangare [24]3 years ago
8 0
This task can be easily done once we have the periodic table. From the periodic table, it can be seen that potassium is in the fourth row. Thus, it has four energy levels. If we are to use the same principle as that stated above, the number of energy levels for each are as follow:

Calcium = Ca (in periodic table) =  energy levels

Iron = Fe (in periodic table) ; 4 energy levels

Nickel = Ni (in periodic table); 4 energy levels

Zinc = Zn (in periodic table) = 4 energy levels
You might be interested in
This increase in blood pHpH due to hyperventilation disrupts O2O2 transport by causing the deprotonation of various residues of
Genrish500 [490]

The question is incomplete as it does not have the options which has been provided in the attachment.

Answer:

1. sudden decrease

2. Respiratory alkalosis

Explanation:

Hyperventilation is a condition caused by the excess removal of the CO₂ from the blood which leads to the decrease in the pCO₂ of the arteries.

This decrease can cause fainting and death of the individual due to the malfunctioning of the body parts, especially the brain.

The decrease in the CO₂ amount of the blood causes the formation of bicarbonate and H⁺ ions which leads to respiratory alkalosis.

Therefore the selected options are correct.

8 0
3 years ago
I need help on this, It’s due today. Please, anybody
Sholpan [36]

Answer:

1 = 252g, 2 = 2mL, 3 = 1.5mL, 4 = 3g, 5 = 225g, 6 = 0.92g/mL, 7 = 0.75g/mL, 8 = 0.71g/mL, 9 = 1.9mL, 10= 1.11mL, 11 = 76.9g

Explanation:

This problem is testing how well you can move around the equation D = m/v where D = Density (g/mL), m= mass of sample (g), v = volume of sample (mL).

4 0
3 years ago
Find the % of H in ammonium hydroxide (NH4OH)
nikklg [1K]

Total number of atoms = 7

Total number of H atom = 5

% of H in ammonium hydroxide = 5/7 ×100 = 71.4 %

3 0
3 years ago
Using the reaction below: 2 CO2(g) + 2 H2O(l) → C2H4(g) + 3 O2(g) ΔHrxn= +1411.1 kJ What would be the heat of reaction for this
maw [93]

Answer:  d) -705.55 kJ

Explanation:

Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.

2CO_2(g)+2H_2O(l)\rightarrow C_2H_4(g)+3O_2(g) \Delta H=+1411.1kJ

Reversing the reaction, changes the sign of \Delta H

C_2H_4(g)+3O_2(g)\rightarrow 2CO_2(g)+2H_2O(l)

\Delta H=-1411.1kJ

On multiplying the reaction by \frac{1}{2} , enthalpy gets half:

0.5C_2H_4(g)+1.5O_2(g)\rightarrow CO_2(g)+H_2O(l)\Delta H=\frac{1}{2}\times -1411.1kJ=-705.55kJ/mol

Thus the enthalpy change for the given reaction is -705.55kJ

7 0
3 years ago
Write a short historical account of the discovery of the Avogadro’s number. In this account, include the roles of Gay-Lussac, Av
nikklg [1K]
It was named Avagadro number for the reason that it was discovered by Amadeo Avagadro, it was named after his last name. The one who in reality initially evaluated the real number of particles in a given substance, was Josef Loschmid. Avagadro was a legal counselor who had an enthusiasm for it, and the reason the number is named after him was a direct result of a French physicist named Jean Baptiste Perrin. Perrin utilized the term as a result of Avagadro's enthusiasm for Brownian movement. What Avagadro had done was assembled everything that researchers had found to help clarify the varieties that existed amongst iotas and atoms. The mole unit is short for the German word molekulargewicht. It was to some degree an aggregate push to build up the idea. Every individual that is said to have found it, is an alternate individual, however these four individuals are the most pertinent
8 0
3 years ago
Read 2 more answers
Other questions:
  • The universe contains billions of galaxies, each containing billions of stars.<br> True or false
    6·2 answers
  • What are the properties of helium
    7·1 answer
  • Which organelle below is the "brain" or control center for a cell?
    5·2 answers
  • When MgCl2 dissolve in water does the Mg and Cl split apart?
    5·1 answer
  • In a chemical reaction, the products are
    5·2 answers
  • Carbon dioxide table
    7·1 answer
  • A sample of nitrogen gas is in a 65.0-L automobile air bag and has a pressure of 745 mm Hg. What is the pressure of this sample
    8·1 answer
  • PLEASE HELP!!! A dive tank at 3000 psi has a temperature of 30° C on the boat. What would the pressure be when diving in 14° C w
    12·1 answer
  • Is the valency of carbon 2 or 4​
    8·2 answers
  • Help! giving brainliest.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!