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
fredd [130]
2 years ago
9

Name an element that has the same number of electron energy levels as Calcium (Ca)?

Chemistry
1 answer:
Lerok [7]2 years ago
6 0

Answer:

aluminum?

Explanation:

You might be interested in
A student experimentally determines the density of a metal cube. The edge length of the cube is measured using calipers. The cub
IgorC [24]

Answer:

10.9%.

Explanation:

The first thing to do in order to solve this question is to Determine the value for the volume of the the cube. This can be done by taking the cube root of the length of the cube;

The volume of the cube = (length of the cube)^3 = length × length × length = 1.72 × 1.72 × 1.72 =( 1.72)^3 = 5.09cm^3.

The next thing you do is to Determine the exponential density, the can be done by using the formula below;

The exponential density = mass/ volume = 55. 786/ 5.09 = 10.96 g/cm^3.

Therefore, the percent error = (true density of the cube - exponential density of the cube)÷ true density of the cube × 100.

Hence, the percent error = 12.30 - 10.96/12.30 × 100 = 10.9%.

8 0
2 years ago
some constellations, such ad Ursa Minor, are visible in the sky year-round; other contellations appear for only part of the year
worty [1.4K]
While most constellations are only visible to us in different seasons, some are always there 24/7/365 because they are positioned close to the Polar Axis, or the Polaris.
5 0
3 years ago
Hi guys, my question is:
guapka [62]

Answer:

See Explanation Below

Explanation:

A) The rate law can only be on the reactant side and you can only determine it after you get the net ionic equation because of spectators cancelling out. So in this case the rate law is k=[CH3Br]^1 [OH-]^1. The powers are there because the rxn is first order.  

B) Since the rxn is first order anything you do to it will be the exact same "counter rxn" per say so since you are decreasing the OH- by 5 the rate will decease by 5

C) The rate will increase by 4 since you are doubling both you have to multiply them both.

8 0
2 years ago
The image shows the representation of an unknown element in the periodic table. A square is shown. Inside the square twelve is w
avanturin [10]

Answer:

The combined mass of all the protons and electrons is 24.305.

Explanation:

From the information given about the atom, we can see that the relative atom mass of the element is 24.305.

The relative atomic mass of an atom is the combined mass of all its isotope in proportion of their geonormal abundances. On the periodic table, this mass deals with the amount of protons and neutrons present in a given atom.

7 0
3 years ago
What are salt ? How they are used
Leno4ka [110]
There is different types of salt.
1)table salt
2)lime salt
7 0
3 years ago
Other questions:
  • The molar mass of hydrogen (H2) is 2.02 g/mol. A sample contains 4.00 mol of H2. What is the mass, in grams, of this sample
    7·1 answer
  • If objects at the same distance suddenly decreased in mass the gravitational force between them would
    5·1 answer
  • Explain how science can help you make more informed decisions about what to eat.
    6·2 answers
  • How many moles of water will be generated during the combustion of 0.38 moles of methyl alcohol (CH3OH)? 2CH3OH + 3O2 2CO2 + 4H2
    14·1 answer
  • Gold has a density of about 20.0g/mL this means that each milliliter has a mass of about __ grams.
    7·2 answers
  • Which of the following is an example of a genetically modified crop?
    15·2 answers
  • Help me!!!! Please!!!!!!!!
    15·1 answer
  • HELP ASAP!
    6·1 answer
  • What is the formula name for Co3N2
    13·1 answer
  • What's the volume of 0.2 mol of hydrogen at STP.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!