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
vlabodo [156]
3 years ago
8

What is common about the elements of a period? Select all that apply. They have the same number of electron energy levels. They

have similar chemical characteristics. They have similar physical characteristics. They transition from a metal to noble gas.
Chemistry
1 answer:
Ann [662]3 years ago
4 0

Answer:

They have the same number of electron energy levels.

They transition from a metal to noble gas.

Explanation:

Periods in the periodic table of elements refer to elements in the same row. All the elements in a certain row of the periodic table;

have the same number of electron energy levels.

transition from a metal to noble gas.

You might be interested in
Magnesium hydroxide, the active ingredient in milk of magnesia, neutralizes stomach acid, primarily hcl, according to the reacti
Tema [17]
For every 1 molecule of Magnesium hydroxide or Mg(OH)2 there will be 2 molecules of HCl neutralized.
If molar mass of magnesium hydroxide is 58.3197g/mol, the amount of mol in 5.50 g magnesium hydroxide should be: 5.50g/ (<span>58.3197g/mol)= 0.0943mol.
Then, the amount of HCl molecule neutralized would be: 2* </span>0.0943mol= 0.18861 mol

If molar mass of HCl is 36.46094 g/mol, the mass of the molecule would be: 0.18861 mol* 36.46094g/mol = 6.88grams
5 0
3 years ago
Read 2 more answers
Calculate the number of kilojoules to warm 125 g of iron from 23.5 °C to 78.0 °C.
Pie
3024.75 Joules needed to warm iron
5 0
3 years ago
What does a<br> map<br> scale measure?
d1i1m1o1n [39]

Answer:

Map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground.

Explanation:

For example, on a 1:100000 scale map, 1cm on the map equals 1km on the ground.

7 0
2 years ago
What are two ways in which density has practical importance?
Marta_Voda [28]
<span>density is how much matter is packed into one area. so the higher density the more likely it is to be heavier. for example, cork has a very low density and iron has a higher density.</span>
6 0
3 years ago
During strenuous exercise, the NADH formed in the glyceraldehyde 3-phosphate dehydrogenase reaction in skeletal muscle must be r
vekshin1

Answer:

The answer is pyruvate → lactate

Explanation:

In the reaction of glycolysis, glucose breaks down to form pyruvate yielding ATP and NADH.

Under or during strenuous exercise, which is an anaerobic condition, lactate is formed by the reoxidization of NADH and the conversion of pyruvate to lactate.

6 0
3 years ago
Other questions:
  • 7. What is the total pressure of the following mixture of gases in a 20.0 L container at 298 K: 12.0 g He,
    5·1 answer
  • Separating Mixtures Checkpoint ( giving brainly )
    8·2 answers
  • Washing filtrate with sodium bicarbonate
    10·1 answer
  • What is an atom? how can we predict it?
    7·1 answer
  • What is ΔE in kJ for a system that receives 1.79 kJ of heat from surroundings and has 4.51 kcal of work done on it at the same t
    5·1 answer
  • The end point in a titration of a 43ml sample of aqueous lactic acid was reached by addition of 16mlof0.22MKOH titrant. One mole
    9·1 answer
  • Which atom in the O-F bond has a partial positive charge (δ⁺)?
    5·1 answer
  • A student writes down several steps of the scientific method. Put the steps in the best order.
    8·1 answer
  • Can someone help me out with this question and explain me the answer too!!! Please
    13·1 answer
  • I NEED HELP ON THIS WORTH 20 POINTS :)
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!