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
s2008m [1.1K]
3 years ago
13

Which list only includes terms that describe water?

Chemistry
1 answer:
Oxana [17]3 years ago
4 0
D! It’s a pure substance and a compound
You might be interested in
Help one number 46 please
Juli2301 [7.4K]
Say the dereference between the two is that "Exo" means "outside" and "Endo" means "inside" meaning one pulls heat inside (endothermic) and the other expels heat (exothermic)
3 0
3 years ago
Determine the number of moles of sodium contained in 3.148 x 1022 formula units of sodium sulfate using dimensional analysis.
Zolol [24]

Answer:

0.0522 mol NaSo4

Explanation:

3.148 x 10^22 Formula units NaSo4 * 1 mol NaSo4 / 6.02 x 10^23 Formula units NaSo4   = 0.0522 mol NaSo4

6 0
2 years ago
The combination of gases that surrounds and protects the earth is known as
Lunna [17]
The combination of gases that surround and protect the Earth is the ATmosphere
5 0
3 years ago
Read 2 more answers
How did Bohr refine the model of the atom? How did Bohr refine the model of the atom? He developed electrochemistry. He discover
BartSMP [9]

Answer:

He developed the concept of concentric electron energy levels

Explanation:

Before Bohr's model, Rutherford's model was proposed. This model explains most of the properties of the atom but failed to explain the stability of the atom.

As per Rutherford's model, electrons revolve around the nucleus in the orbit.

But revolving electron in their orbit around nucleus would give up energy and so gradually move towards the nucleus and therefore, eventually collapse.

Bohr's proposed that the electrons around the nucleus move orbit of fixed energy called "stationary states". Electrons in these stationary states  do not radiate energy.

Therefore, proposal of concentric electron energy levels refine the atomic models.

5 0
4 years ago
7.5 g of aluminum reacts with an excess of oxygen how many grams of aluminum oxide are produced?
ycow [4]
<span>14.2 grams
   Let's start by looking up the atomic weights of aluminum and oxygen. Atomic weight aluminum = 26.981539
Atomic weight oxygen = 15.999
   Moles Al = 7.5 g / 26.981539 g/mol = 0.277967836
   The formula for aluminum oxide is Al2O3, so for every 2 moles of Al, 3 moles of O is required. So let's calculate the number of moles of O we need and from that the mass.
   0.277967836 mol / 2 * 3 = 0.416951754 mol
 Mass O2 = 0.416951754 * 15.999 = 6.670811105
The mass of aluminum oxide is simply the mass of aluminum plus the mass of oxygen. So:
    7.5 g + 6.670811105 g = 14.17081111 g
   Rounding to 1 decimal place gives 14.2 g.</span>
3 0
3 years ago
Other questions:
  • Equilibrium systems_____.
    7·2 answers
  • What is the empirical formula for c4h10
    14·1 answer
  • Which group of atoms has this electron dot structure?
    11·1 answer
  • How many grams of ethanol would be formed from the reaction of 243.7<br> grams of glucose?
    11·1 answer
  • What is the molarity of a 5mol solution in 3L?
    13·1 answer
  • What is one example of a scientific model? (this is science I don't know why can't find it on "pick a subject" so yeah)
    11·2 answers
  • What is the temperature of someone with a fever? Select the better estimate.<br> 40°F<br> 40°C
    13·1 answer
  • Scientific laws commonly answer which questions about the world?
    15·1 answer
  • What is one main role of state governments?
    13·2 answers
  • Methanogenic bacteria convert acidic acid (CH3COOH) to CO2(g) and CH4(g)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!