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
Usimov [2.4K]
3 years ago
11

Which element has an atomic number of 16? a. oxygen (O) b. sulfur (S) c. germanium (Ge)

Chemistry
2 answers:
natta225 [31]3 years ago
6 0
Answer will be B : sulfur
emmasim [6.3K]3 years ago
3 0

Answer: Sulfur

Explanation:

You might be interested in
PLZ HELP PLZ HURRY NO WRONG ANSWER PLZ ALSO WILL GIVE BRAINLIEST
Advocard [28]

Answer:

I dont lnow much about chemistry, but I believe it's either d or a. sorry if its wrong!

4 0
2 years ago
Give an example of how you can conserve energy.
Archy [21]
Ok, my favorite is turning lights off when not in use OR changing out old lightbulbs that are more efficient. :)
5 0
2 years ago
Someone please help me!!
Anna007 [38]

Explanation: D and G

             

4 0
3 years ago
In a combustion experiment, it was found that 12.096 g of hydrogen molecules combined with 96.000 g of oxygen molecules to form
Mkey [24]
The mass change, or the mass defect, can be calculated by the formula that is very known to be associated with Albert Einstein. 

E = Δmc²
where
E is the energy gained or released during the reaction
c is the speed of light equal to 3×10⁸ m/s
Δm is the mass change

(1.715×10³ kJ)(1,000 J/1 kJ) = Δm(3×10⁸ m/s)²
Δm = 1.91×10⁻¹¹ kg
5 0
3 years ago
What is the mass of CO2 lost at 20 min from the limestone sample?
harkovskaia [24]

Answer:

The mass, CO2 and CO3 from the limestone sample is discussed below in details.

Explanation:

(A) mass loss of sample of limestone after 20 min

= 0.8437g-0.5979g = 0.2458 g

From the given reaction of limestone, 2 mol of the sample gives 2 moles of CO 2.

Therefore  

184.4 g ( molar mass of limestone) gives2× 44 g of carbon dioxide.

1 g of sample gives 88/184.4 g of carbon dioxide

Hence 0.2458 g sample gives

= 88/184.4 × 0.2458 g = 0.117 g carbon dioxide

(B) mole of CO 2 lost = weight/ molar mass

= 0.117 g / 44 g/mol =0.0027 mole

(C). 1 mol of limestone contain 2 mol of carbonate ion

From the reaction we know that carbonate ion of limestone is converted into carbondioxide

Hence lost carbonate ion = 0.2458 g

(D) we know that

1 mol limestone contain 1mol CaCO​​​ 3

Hence in sample present CaCO​​​ 3

= 1mole / 184.4 g × 0.8437 g= 0.00458 mol CaCO​​​3

8 0
3 years ago
Other questions:
  • a r. tank contains H. initially at 100 kn/m2 and 20°C. 1 1/2 kg of H added so that t2 and p of the tank is 30°C and 250 kpa, Det
    13·1 answer
  • Whats the ph for a solution poh4 9.78 concentration of solution
    10·1 answer
  • PLZ ANSWER NOW
    10·2 answers
  • Draw the Lewis Structure for H2O.
    15·1 answer
  • What is the charge on an electrically neutral atom of hydrogen?. . A. 1. . B. 0. . C. +1. . D. +2.
    9·2 answers
  • A sample of gas occurs 9.0mL at a pressure of 500mmHg. A new volume of the same sample is at 750mmHg. Use two significant figure
    12·1 answer
  • How is a warm front formation diffrent from occlued front formation​
    6·1 answer
  • 4 mol of water is made up of 2.408×10^24 molecules of water.
    7·1 answer
  • Do particles in air take the space of the container when some particles of air are released?
    9·1 answer
  • Write anode and cathode in Zn-Ag galvanic cell​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!