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
Sveta_85 [38]
3 years ago
7

An atom of phosphorus has an atomic number of 15 and a mass number of 31. how many protons and neutrons does it contain?

Chemistry
1 answer:
vazorg [7]3 years ago
7 0
Phosphorus has 15 protons and 16 electrons.
You might be interested in
If you have 5 moles of carbon dioxide at 30degrees C and under 600mmHg of pressure, what will the volume be
trapecia [35]

Answer:

157.64 L

Explanation:

We'll begin by converting 30 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

T(°C) = 30 °C

T(K) = 30 °C + 273

T (K) = 303 K

Next, we shall convert 600 mmHg to atm. This can be obtained as follow:

760 mmHg = 1 atm

Therefore,

600 mmHg = 600 mmHg × 1 atm / 760 mmHg

600 mmHg = 0.789 atm

Finally, we shall determine the volume of the gas. This can be obtained as follow:

Number of mole (n) = 5 moles

Temperature (T) = 303 K

Pressure (P) = 0.789 atm

Gas constant (R) = 0.0821 atm.L/Kmol

Volume (V) =?

PV = nRT

0.789 × V = 5 × 0.0821 × 303

0.789 × V = 124.3815

Divide both side by 0.789

V = 124.3815 / 0.789

V = 157.64 L

Therefore, the volume of the gas is 157.64 L

7 0
3 years ago
The study of the interaction between animals and plants within a specific environment is called
sergij07 [2.7K]

Answer:

The study is called ecology

Explanation:

Mark as brainliest if I'm correct

8 0
3 years ago
Read 2 more answers
Many grasses and few trees characterize ____________ (tundras/temperate grasslands).
Oksanka [162]

Answer:

Temperate Grasslands

Explanation:

Tundras have nothing to do with grass. Tundras are more like ice

8 0
3 years ago
Read 2 more answers
How many total orbitals are within the 3s, 3p, and<br> energy level?
Nina [5.8K]

The answer for the following question is explained below.

Therefore the total number of orbitals are " 9 ".

Explanation:

Orbital:

An orbital is a mathematical function that describes the wave-like behavior of an electron,electron pair,or the nucleons.

The total number of orbitals present in the 3rd energy level is 9.

Here,

A 3 s subshell has only one orbital.

A 3 p subshell has three orbitals.

A 3 d subshell has five orbitals.

Therefore the total number of orbitals is:

3 s = 1 orbital

3 p = 3 orbitals

3 d = 5 orbitals

total orbitals in 3rd energy level is = 1 + 3 + 5 =9

Therefore the total number of orbitals are " 9 ".

7 0
3 years ago
Read 2 more answers
Mei wants to study whether heart rate increases more during certain exercises than during others. She designs an experiment to t
postnew [5]
The differing heart rates is the dependent variable. This is because it is dependent on the exercise that will depict the heart rate
7 0
3 years ago
Read 2 more answers
Other questions:
  • Functional groups confer specific chemical properties to the molecules of which they are a part. in this activity, you will iden
    11·1 answer
  • What is the percent composition of sulfur in H2SO4?
    6·1 answer
  • An unknown compound has the following chemical formula:
    14·1 answer
  • The radii of the sodium and potassium ions are 102 pm and 138 pm, respectively. which compound has stronger ionic at- tractions,
    15·1 answer
  • Which statement about oxidation and reduction in a voltaic cell is true? Both oxidation and reduction occur at the anode.
    8·1 answer
  • In an exothermic reaction, the water will _______ in a calorimeter.
    15·1 answer
  • Determine the average atomic mass of the following mixture of isotopes of Potassium:
    7·1 answer
  • 3x - 12 = 7x + 8 <br> -4x - 12 = 8 <br> -4x - 20 <br> X = -5
    12·1 answer
  • What does it mean when it asks for the planet’s composition?
    10·2 answers
  • In the reaction shown,
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!