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
Ludmilka [50]
3 years ago
13

a student has a sample of a mystery element and knows that it belongs to one of the region marked on the Periodic table shown be

low

Chemistry
1 answer:
salantis [7]3 years ago
5 0
B its a transitional metal probably silver
You might be interested in
A local barista serves coffee at 85°C. You add ice to the coffee to cool it to 55°C. Assume that an ice cube is 24 g and -18.5°C
Mama L [17]
B)4 ghhhhhhjjjyuuhhdddghhhjj’
3 0
2 years ago
Draw a physical model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride).
Brilliant_brown [7]

Answer:

Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas

Zn + 2HCI - ZnCl2 + H2

Explanation:

Be sure to label your model to clearly show how you are representing the atoms

3 0
2 years ago
Which milligram quantity contains a total of four significant figures
denis23 [38]
D has a total of four significant figures.
7 0
3 years ago
Read 2 more answers
How many milliliters of a 0.40%(w/v) solution of nalorphine must be injected to obtain a dose of 1.5 mg?
ozzi
The number  of Ml  of  a  0.40 %w/v solution  of   ,nalorphine  that must  be injected  to  obtain  a  dose  of 1.5 mg is  calculated as  below


since M/v%   is  mass  of solute  in  grams per 100  ml

convert Mg to  g
1 g = 1000 mg  what  about  1.5 mg =?  grams
=   1.5 /1000 = 0.0015 grams


volume is therefore =  100 (  mass/ M/v%)

= 100  x(  0.0015/ 0.4) =  0.375  ML
6 0
3 years ago
HEEEEELP ASAPP IM AWARDING 30 points!!!!
alexira [117]

Answer:

\rm S^{2-}.

Explanation:

Based on the electron configuration of this ion, count the number of electrons in this ion in total:

2 + (2 + 6) + (2 + 6) = 18.

Each electron has a charge of (-1).

Atoms are neutral and have 0 charge. However, when an atom gains one extra electron, it becomes an ion with a charge of (-1). Likewise, when that ion gains another electron, the charge on this ion would become (-2).

The ion in this question has a charge of (-2). In other words, this ion is formed after its corresponding atom gains two extra electrons. This ion has 18 electrons in total. Therefore, the atom would have initially contained 18 - 2 = 16 electrons. The atomic number of this atom would be 16.

Refer to a modern copy of the periodic table. The element with an atomic number of 16 is sulphur with atomic symbol \rm S. To denote the ion, place the charge written backwards ("2-" for a charge of (-2)) as the superscript of the atomic symbol:

\rm S^{2-}.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Provide the alkyne starting material a, intermediate organic product b, and identify the reagents.
    7·1 answer
  • WILL MARK BRAINLIEST !! HELP ASAP
    15·2 answers
  • Identify the arrows that show removal of thermal energy when matter changes state.
    8·2 answers
  • Which of the following salts is the least soluble in water?
    11·2 answers
  • What is the definition of solution?
    12·1 answer
  • Lewis is running in a race. His muscles need oxygen. Which best describes how multiple systems interact to bring him into homeos
    13·2 answers
  • What part of an atom orbits around the center of the atom?
    15·2 answers
  • Platinum-189<br> What is the atomic number
    11·1 answer
  • 7. What is the molar mass of each of the following elements?
    11·2 answers
  • What is potential energy?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!