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
cestrela7 [59]
3 years ago
8

Some one please help i am so stuck on these

Chemistry
1 answer:
Mariulka [41]3 years ago
5 0
The first one is d
second one is a
You might be interested in
Bohr model for silicon
Lunna [17]
Hope this answer helps you

5 0
3 years ago
In the naturally occurring D series of ketoses, the carbonyl group is found on carbon number ___________, whereas in aldoses, th
Elena-2011 [213]

Answer:

second carbon atom from the  end

end carbon atom

Explanation:

Carbohydrates are naturally occurring organic compounds containing carbon, hydrogen and oxygen. The general molecular formula of Carbohydrates is C_x(H_2O)_y.

Carbohydrates can be classified based on structures,

Carbohydrates with the structure of alkanals (-CHO) are known as aldose while those of the structure of alkanones (C=O) are known as ketose.

In stereochemistry , D series is a kind of configurational arrangement where the hydroxyl group attaches itself to the right hand side.

Thus; in naturally occurring D series of ketoses, the carbonyl group is found on carbon number <u>second carbon atom from the  end </u>whereas in aldoses, the carbonyl group is found on carbon number <u> end carbon atom.</u>

7 0
3 years ago
The periodic table of the elements lists the elements in order of increasing atomic number. Each element has its own unique squa
Vesna [10]

Answer:

A) They all have 12 protons.

Explanation:

Magnesium has an atomic number of 12 which means it has 12 protons. All Magnesium atoms have 12 protons, the neutrons however may differ which produces things called isotopes where the atoms have same protons but neutrons change.

Keep in mind the atomic number is unique to each element, so 12 atomic number will always be Magnesium, 1 will always be Hydrogen and so on.....

6 0
3 years ago
A small amount of a solid is added to water. The observation made after fifteen minutes is shown in the figure. Which of these s
natulia [17]

Answer:

B) sand

Explanation:

A) Oil is a wrong choice because it is a liquid not a solid and also if it is oil, it will float over the water surface as a droplets.

B) Sand is the right choice, because sand is a solid and it does not dissolve in water and stabilizes at the bottom.

C) Sugar is a wrong choice, because small amount of sugar will dissolve in water and be a homogeneous solution and does not appear as a particles.

D) Wood ships is also a wrong choice, even it is a solid and does not dissolve in water, but it will float over the water surface.

4 0
3 years ago
The temperature of a star is 6000K and its luminosity is 1000. Which type of star is it?
Lorico [155]

Answer:

Its probably none of those.

Explanation:

White dwarf temperatures can exceed 100,000 Kelvin according to NASA (that's about 179,500 degrees Fahrenheit). Despite these sweltering temperatures, white dwarfs have a low luminosity as they're so small in size according to NMSU.

4 0
2 years ago
Other questions:
  • Using ammonia, show how Bronsted and Lowry improved the defination of acids and bases
    14·1 answer
  • List 5 biotic factors inside of a classroom
    6·1 answer
  • What is the volume of 5.5 M HCl solution if it is neutralized in a titration by 85.0 mL of 1.22 M Mg(OH)2?
    12·1 answer
  • Given the following equation:
    11·1 answer
  • Find mass of 4.5 moles of co2​
    14·1 answer
  • How many neutrons does element X have if its atomic number is 31 and its mass number is 84?
    14·1 answer
  • The diagram shows a model of an atom. Who first proposed this model?
    6·1 answer
  • Constraints of a crane​
    14·1 answer
  • Given that E°red = -0.40 V for Cd2+/Cd at 25°C, find E° and E for the concentration cell expressed using shorthand notation belo
    14·1 answer
  • Using the periodic table, complete the table to describe each atom.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!