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
diamong [38]
2 years ago
10

The mass number of an atom is determined by ___.

Chemistry
1 answer:
Ronch [10]2 years ago
4 0

Answer:

2

Explanation:

You might be interested in
Why do you think scientist can use the basic properties of matter to help identify an unknown substance?
deff fn [24]

They can use the properties to test and come to some kind of conslusion about the object because in some way it's gotta correlate back to one of the different properties of matter.

4 0
3 years ago
How a cation is formed by an atom?​
fenix001 [56]

Answer:

Cations are positively charged atoms and hence we need to make the atom positively charged in order to get a cation

We know that an atom is neutral as a whole, so we have equal number of electrons and protons

since we cannot mess with the number of protons in an atom, we have to do it by altering the number of electrons

If we reduce the amount of electrons in an atom, the net charge will be positive and hence a cation will be formed

4 0
3 years ago
If calcium chloride is dissolved in water, what can be said about the concentration of the calcium ion? a. It has the same conce
e-lub [12.9K]

Answer:

b. Its concentration is half that of the chloride ion

Explanation:

As the calcium chloride formula is CaCl2

CaCl2 <--> Ca + 2 Cl-

4 0
3 years ago
For a particular reaction, Δ=−111.4 kJ and Δ=−25.0 J/K.
vichka [17]

Answer:

\Delta G =-103.95kJ

Explanation:

Hello there!

In this case, since the thermodynamic definition of the Gibbs free energy for a change process is:

\Delta G =\Delta H-T\Delta S

It is possible to plug in the given H, T and S with consistent units, to obtain the correct G as shown below:

\Delta G =-111.4kJ-(298K)(-25.0\frac{J}{K}*\frac{1kJ}{1000J} )\\\\\Delta G =-103.95kJ

Best regards!

6 0
3 years ago
The walls in your home have 25mm of expanded polystyrene (R-value 3.96) and 25mm of rigid urethane foam (R-value 7.50). What is
Finger [1]

Answer:

3.6 per inch

EPS insulation features an average r-value of 3.6 per inch.

In addition to providing energy efficiency, EPS without film facers has a perm rating of up to 5.0.

Explanation:

hope this helps

7 0
3 years ago
Other questions:
  • Solids are usually more dense than:
    9·2 answers
  • How is a weather report different from a weather forecast
    10·1 answer
  • Determine the acid dissociation constant for a 0.020 m formic acid solution that has a ph of 2.74. formic acid is a weak monopro
    8·1 answer
  • PI3Cl2 is a nonpolar molecule. Based on this information, determine the I−P−I bond angle, the Cl−P−Cl bond angle, and the I−P−Cl
    6·1 answer
  • What is the source of almost all energy on earth
    6·2 answers
  • Equations can be balanced by using the half-reaction method. Which step should be completed immediately after finding the oxidat
    14·2 answers
  • What compound is missing?<br> 3Na2SO4 + 2AlCl3 →+ _____ + 6NaCl
    12·1 answer
  • When I’m the imposter in among us....
    14·2 answers
  • Electron configuration
    10·1 answer
  • Please helppppppppppppppppppppppppppppppppppppppppp
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!