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
gayaneshka [121]
3 years ago
6

the distance between atomes is sometimes given in picometers,where 1pm is equivalent to 1×10^12m if the distance between the car

bon atomes in diamond is 2.81×10^8,what is the distance in picometers?​
Chemistry
1 answer:
grigory [225]3 years ago
3 0

Answer:

Distance between the carbon atom = 491 pm

Explanation:

Given:

1 pm = 1 × 10⁻¹² m

Distance between the carbon atom = 2.81 × 10⁻⁸ cm

Find:

Distance in picometers

Computation:

Distance between the carbon atom = 2.81 × 10⁻⁸ cm = 491 X 10⁻¹² m

Distance between the carbon atom = 491 pm

You might be interested in
What is the molality, m, of an aqueous solution of ammonia that is 12.83 M NH3 (17.03 g/mol)? This solution has a density of 0.9
daser333 [38]

Answer:

Molality = 18.5 m

Explanation:

Let's analyse data. We want to determine molality which means mol of solute / 1kg of solvent. (Hence we need, the moles of solute and the mass of solvent in kg)

12.83 M means molarity → mol of solute in 1L of solution

Density refers always to solution → Mass of solution / Volume of solution

1L = 1000 mL

We can determine the mass of solution with density

0.9102 g/mL = Mass of solution / 1000 mL

Mass of solution = 0.9102 g/mL . 1000 mL → 910.2 g

Let's convert the moles of solute (NH₃) to mass

12.83 mol . 17.03 g/ 1 mol = 218.5 g

We can apply this knowledge:

Mass of solution = Mass of solvent + Mass of solute

910.2 g = Mass of solvent + 218.5 g

910.2 g - 218.5 g = 691.7 g → Mass of solvent.

Let's convert the mass in g to kg

691.7 g . 1kg / 1000 g = 0.6917kg

We can determine molalilty now → 12.83 mol / 0.6917kg

Molality = 18.5 m

6 0
3 years ago
A gas at 1.2 atm has a
Papessa [141]

Answer:

1.26 mole

Explanation:

Using ideal gas law

PV=nRT

R= 0.08206

T=273+87=360

1.2×31=n×0.08206×360

37.2 =n × 29.54

n= 1.26 mole

8 0
3 years ago
The sodium-potassium exchange pump
trapecia [35]

Answer: The correct answer is option E

Explanation:

Sodium/potassium pump is a mechanism that involves the movement of sodium ions (Na+) out of a cell and potassium ions (K+) into a cell, thereby regulating concentration of ions on both sides of a typical cell membrane.

In this situation, the sodium-potassium pump is usually helps in the establishment of the resting potential. The potassium voltage channels normally closes before the membrane potential is brought to a resting level.

In summary, sodium/potassium pump helps to maintain a balance in the system.

6 0
3 years ago
HELP FAST PLZ!!!
horsena [70]

Answer:

b

Explanation:

the baloon is made to hold more air.

7 0
3 years ago
When hydrogen is burned in the presence of oxygen it will form water, as per the equation: 2H2 + O2 -> 2H2O. Which types of r
nadya68 [22]

Answer:

B

Explanation:

Hydrogen is synthesized to water by adding Oxygen.

Hydrogen is oxidised to water by combustion ( burning in presence of oxygen).

4 0
3 years ago
Other questions:
  • Express as an ordinary number.<br><br> 3.85 x 10 -3 =<br><br> 0.00385<br> 3,850<br> 0.385
    10·2 answers
  • How would decreasing the volume of the reaction vessel affect each of the following equilibria?
    11·1 answer
  • Where does the stonefish hide
    9·2 answers
  • Which of the following is a salt?<br> A) C2H2<br> B) C6H12O6<br> C) O2<br> D) CaCl2
    6·2 answers
  • Describe what happens when ionic and covalent (molecular) substances dissolve. Fill in the blanks using the options below:covale
    9·1 answer
  • Teams of scientists work together to explore space. Which achievement did not involve chemists?
    9·1 answer
  • Which of the following is an example of Newton’s 2nd Law? A. A bowling ball requires more force to roll than a tennis ball B. Si
    12·1 answer
  • How much heat is needed to warm 250g of water from 22°C to 98°C ?​
    10·1 answer
  • How many atoms are in 1.4 mol of phosphorus trifluoride (PF3)?
    5·1 answer
  • Which statement best describes what happens to the stability of hydrogen and oxygen atoms when they form bonds in a water molecu
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!