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
insens350 [35]
3 years ago
11

Which of the following is an element water oxygen carbon dioxide ammonia

Chemistry
1 answer:
Makovka662 [10]3 years ago
8 0
Oxygen is the only element in that list, the rest are compounds.
You might be interested in
If you burn 59.1 g of hydrogen and produce 528 g of water , how much oxygen is reacted
shtirl [24]
Hydrogen + oxygen --> water
59,1g + x = 528g
528g - 59,1 = x
x = 468,9g
8 0
3 years ago
Sandy puts a paper clip on the table. Then, she puts a magnet near the paperclip. The paperclip begins to move.
Akimi4 [234]
Applied forces/or unbalanced:i hope that helps you
3 0
3 years ago
Read 2 more answers
Which statement identifies the element arsenic?
insens350 [35]

Answer : Option A) Atomic number of Arsenic is 33.


Explanation : Arsenic contains same number of protons in its atomic nucleus. In arsenic there are 33 protons found in the atomic nucleus. Hence, the atomic number will be 33. It has 5 valence electrons in its outermost shell, which is also called as valence shell. So, its valency becomes 5.

8 0
3 years ago
Read 2 more answers
A star is estimated to have a mass of 2.0 x 10 ^36kg. Assuming it to be a sphere of average radius of 7.0 x 10 ^5 km. Calculate
Montano1993 [528]

Answer:

<em>a)</em> <em>1.392 x 10^6 g/cm^3</em>

<em>b) 8.69 x 10^7 lb/ft^3</em>

<em></em>

Explanation:

mass of the star m =  2.0 x 10^36 kg

radius of the star (assumed to be spherical) r = 7.0 x 10^5 km = 7.0 x 10^8 m

The density of substance ρ = mass/volume

The volume of the star = volume of a sphere = \frac{4}{3}\pi  r^{3}

==> V = \frac{4}{3}*3.142*(7.0*10^8)^{3} = 1.437 x 10^27 m^3

density of the star ρ = (2.0 x 10^36)/(1.437 x 10^27) = 1.392 x 10^9 kg/m^3

in g/cm^3 = (1.392 x 10^9)/1000 = <em>1.392 x 10^6 g/cm^3</em>

in lb/ft^3 =  (1.392 x 10^9)/16.018 = <em>8.69 x 10^7 lb/ft^3</em>

6 0
2 years ago
What is the balanced equation for the voltaic cell of copper and silver
Strike441 [17]

Answer:

I dont knw

Explanation:

3 0
2 years ago
Other questions:
  • Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy
    15·2 answers
  • How many moles of oxygen gas (O2) are in a 2.50 L container at standard temperature and pressure?
    11·1 answer
  • Help can you match the answers to the definition PLZ Need this ASAP 30 points
    12·1 answer
  • A sample of nitrogen goes from 21L to 14L and it's pressure increases from 100kPa to 150kPa. The final temperature is 300K. What
    12·1 answer
  • Given the following, determine ΔG°f at 298 K for SnO. Sn(s) + SnO2(s) → 2SnO(s) ; ΔG° = 12.0 kJ at 298K
    11·1 answer
  • Which of the following is a change from a less condensed to a more condensed state of matter?. . Boiling. . Evaporating. . Conde
    15·2 answers
  • Air has a mass of 1.2g and a volume of 4,555ml. What is the density
    5·1 answer
  • A balloon filled with helium has a volume of 5.24 L at 290 ºC. The volume of the balloon decreases to 2.58 L after it is taken o
    15·1 answer
  • The average kinetic energy of a sample of water molecules is –
    7·2 answers
  • What is the pOH of a solution that has a pH of 2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!