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
fiasKO [112]
3 years ago
10

WILL GIVE THANKS,STARTS AND BRANLIEST!!!!! PLEASE COME LOOK! SHARE YOUR SMARTNESS!!!! PLSSSSS AT LEAST COME TAKE A LOOK! ANSWER

IF 100% SURE.
4. What is the amount of valence electrons in an atom equivalent to?
A) The amount of protons an atom has
B) The group the atom is located
C) The period the atom is located
D) The amount of electrons an atom has


6. How many sodium (Na) and oxygen (O) atoms are needed to form the ionic compound sodium oxide?

A) There needs to be 1 Na atom and 2 O atoms to form Na2O
B) There needs to be 1 Na atom and 1 O atom to form Na2O
C) There needs to be 2 Na atoms and 1O atom to form Na2O
D) There needs to be 2 Na atoms and 2O atoms to form Na2O
Chemistry
2 answers:
madreJ [45]3 years ago
6 0

Answer:

B) The group the atom is located

C) There needs to be 2 Na atoms and 1O atom to form Na2O

Lorico [155]3 years ago
3 0

Answer:

4. A

5. I don't see the correct answer, but 2 sodium and one oxygen.

Explanation:

4., Because the amount of electrons needs to be equal to the number of protons to balance out charges.

5. You can find it on the web.

You might be interested in
How many grams of H, are needed to produce 14.19 g of NH3 ?
Simora [160]

mass h

<h3>=</h3>

Explanation:

molar mass is equal to number of mass over moles we take 14.19 over17 molar mass of ammammonium equals 0.8347 incase of moles. 1H=1Nh3 ,so. n.H=0.8347 Mr=2 ,M.H=? Mr=m/n. 0.8347x2=1.669grams

4 0
3 years ago
I WILL GIVE YOU BRANILY PLS
Rus_ich [418]

Answer:

439

Explanation:

4 0
3 years ago
Read 2 more answers
Calculate the frequency of a beam of light that is 35.6m long.
Vladimir [108]

Answer:

f = 0.084 s⁻¹

Explanation:

Given data:

Frequency of light = ?

Wavelength = 35.6 m

Solution:

Formula:

Speed of light = wavelength × frequency

Speed of light = 3× 10⁸ m/s

by putting values,

3× 10⁸ m/s = 35.6 m ×  f

f = 3× 10⁸ m/s / 35.6 m

f = 0.084 s⁻¹

7 0
3 years ago
Name given to a negatively charged atom?
monitta
An anion is a negatively charged particle.
8 0
3 years ago
Read 2 more answers
A student carried out this reaction with methane as the limiting reagent. A 12.0 g quantity of methane was used, and the student
Sophie [7]

Answer:

The percent yield is 66.7%

Explanation:

1. The balanced chemical reaction to obtain carbon dioxide from the methane is:

CH_{4}+2O_{2}=CO_{2}+2H_{2}O

2. Calculathe the theoretical quantity of carbon dioxide.

As the problem says that the limiting reagent is the methane, all the calculations will be made from this quantity:

12.0gCH_{4}*\frac{1molCH_{4}}{16gCH_{4}}*\frac{1molCO_{2}}{1molCH_{4}}*\frac{44gCO_{2}}{1molCO_{2}}=33gCO_{2}

3. Calculate the percent yield:

Percent yield = \frac{actualyield}{theoreticalyield}*100

Percent yield = \frac{22.0g}{33.0g}*100

Percent yield = 66.7%

7 0
3 years ago
Other questions:
  • Which element would have properties most like arsenic (As)? Te Ge P Se
    5·1 answer
  • When oxygen and aluminum form an ionic compound, what is the formula?
    7·2 answers
  • A material has a density of 8.9 g/cm3. you have six cubic centimeters of the substance. what is the material’s mass in grams?
    8·2 answers
  • A 0.98 M solutions of calcium chloride with a volume of 0.25 L diluted to form a 0.74 M solution. What is the new volume of the
    12·1 answer
  • How to do moles in chemistry
    6·1 answer
  • How many liters are in .0025 millililiters
    6·1 answer
  • .<br>..........................................................
    14·2 answers
  • Question 1 of 10
    15·2 answers
  • HELP ME ASAP WITH MY SCIENCE HW! I’m currently failing this class
    9·2 answers
  • Which type of wave interaction is shown in the photo? with ISSN AN O A. Diffraction O B. Reflection O C. Refraction O D. Absorpt
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!