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
Phoenix [80]
3 years ago
5

7. Calculate the net charge of the following atoms.

Chemistry
2 answers:
mylen [45]3 years ago
7 0

Answer:

Atom A: +2 Atom B: 0 Atom C: -4 Atom D: +4

Explanation:

We know that protons have a positive charge and electrons have a negative charge. Therefore, we will treat the electrons as a negative number. The net charge is the sum of electrons and protons.

Atom A = 6 + (-4)

because electrons as negative.

Net charge = +2

Atom B = 9 + (-9)

Net charge = 0, or neutral

Atom C = 10 + (-14)

Net charge = -4

Atom D = 33 + (-29)

Net charge = +4

loris [4]3 years ago
6 0

Answer:

any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.

Explanation:

You might be interested in
A student collected a 47.5 mL sample of gas in the lab at 0.8 atm pressure and 29.00C. What volume would this gas sample occupy
Sav [38]

Answer:

the volume would be 69.034mL

Explanation:

8 0
3 years ago
8 moles Cl to grams 3
kirill [66]

Answer: I don’t understand what your asking elaborate more

Explanation:

7 0
3 years ago
Select the correct answer from each drop-down menu.
earnstyle [38]

Answer:

The granite block transferred <u>4080 joules</u> of energy, and the mass of the water is <u>35.84 grams</u>.

Explanation:

The equation needed to answer both parts of the question is:

Q = mcΔT

In this equation,

-----> Q = energy/heat (J)

-----> m = mass (g)

-----> c = specific heat (J/g°C)

-----> ΔT = change in temperature (°C)

<u>Part #1:</u>

First, you need to find the energy transferred from granite block using the previous equation. You have been given the mass, specific heat, and change in temperature.

Q = ? J                            c = 0.795 J/g°C

m = 126.1 g                     ΔT = 92.6 °C - 51.9 °C = 40.7 °C

Q = mcΔT

Q = (126.1 g)(0.795 J/g°C)(40.7 )

Q = 4080

<u>Part #2:</u>

Secondly, using the energy calculated in Part #1, you need to calculate the mass of the water. You have calculated the energy transferred, and have been given the specific heat and change in temperature.

Q = 4080 J                     c = 4.186 J/g°C

m = ? g                            ΔT = 51.9 °C - 24.7 °C = 27.2 °C

Q = mcΔT

4080 J = m(4.186 J/g°C)(27.2 °C)

4080 J = m(113.8592)

35.84 = m

4 0
2 years ago
This chart lists four elements from the periodic table.
I am Lyosha [343]

Answer:

calcium and gold

Explanation:

thats what it said was right

7 0
2 years ago
Read 2 more answers
Calculate a pendulums frequency (in Hz) if the pendulum completes 19 cyclesin 0.5 s.
MAVERICK [17]
1Hz = 1 cycle per second

19 cycles / .5 seconds = 38Hz
8 0
3 years ago
Other questions:
  • The coordinate plane is separated into four quadrants as shown. let p: x &lt; 0 let q: y &lt; 0 what is represented by p ∨ q?
    7·2 answers
  • Temperature measures _____.
    14·2 answers
  • How many atoms are in .47 moles of argon
    14·1 answer
  • How to 45 m/s converted to km/hr
    9·1 answer
  • Which row in the table shows how many electrons there could be in the outer shell of an atom of V? ​
    6·1 answer
  • In what way did Rannan make an error in his scientific process? He should not use a systemic process. He should not use his opin
    16·2 answers
  • 28. Which statement is INCORRECT regarding radiation?
    13·1 answer
  • Calculate the number of moles found in 3.045x1024 atoms of helium.<br><br> PLS HELP
    6·1 answer
  • On Crosbia, the element unobtanium (Uo) has three isotopic forms: Uo-220, U0-221, and Uo-
    10·1 answer
  • How are liquid mass and liquid volume different ?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!