answer.
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
Afina-wow [57]
2 years ago
5

What is the fraction of the hydrogen atom's mass (11h) that is in the nucleus? the mass of proton is 1.007276 u, and the mass of

11h atom is 1.007825 u. express your answer using four significant figures?
Chemistry
1 answer:
ololo11 [35]2 years ago
3 0
Hello there!

To determine the fraction of the hydrogen atom's mass that is in the nucleus, we have to keep in mind that a Hydrogen atom has 1 proton and 1 electron. Protons are in the nucleus while electrons are in electron shells surrounding the nucleus. The mass of the nucleus will be equal to the mass of 1 proton and we can express the fraction as follows:

Mass Fraction= \frac{mass 1 Proton}{mass H atom} = \frac{1,007276 u}{1,007825}=0,9995

So, the fraction of the hydrogen atom's mass that is in the nucleus is 0,9995. That means that almost all the mass of this atom is at the nucleus.

Have a nice day!
You might be interested in
The Society of Automotive Engineers has established an accepted numerical scale to measure the viscosity of motor oil. For examp
tatuchka [14]
Because its molecules can slide around each other, a liquid<span> has the ability to flow. The resistance to such flow is called the </span>viscosity<span>. For organic liquids, as the chain increases the viscosity increases as well due to the bonding that is present. Therefore, the ranking should be as follows:

</span><span>CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3
</span><span>CH3CH2CH2CH2CH2CH2CH2CH3 
</span><span>CH3CH2CH2CH2CH2CH3 </span>
5 0
2 years ago
Read 2 more answers
Simplify: <br>(100 m)/(26 s)
podryga [215]

100m/26s=50m/13s

50m/13s=3.846m/s

4 0
2 years ago
Read 2 more answers
A chemist mixes 75.0 g of an unknown substance at 96.5C w/ 1,150 g of water at 25.0C . if the final temperature of the system is
vichka [17]
Remember: heat lost = heat gained 

When calculating heat loss or gain, remember 

mass*(spec heat cap)*(change in T) 

The unknown loses heat- we don't know the spec heat cap, so we'll call it x.

The water gains. I've omitted the units, but always use when solving problems on your own. 

75*x*(96.5-37.1) = 1150*4.184*(37.1-25) 
<span>
Now it's all set up- use algebra to get x, the spec heat cap of the unk in J/g*degC

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
3 0
2 years ago
A student described two properties of a substance shown below which of the following is true about the two properties described
mel-nik [20]

Answer:

B

Explanation:

catches fire easily, there is a chemical in the substance that reacts to the flame, and a key to it being a chemical property is when exposed to other substances, there is a chemical in the other substances that makes it chemically react

7 0
2 years ago
Read 2 more answers
A gas is heated from 263.0 K to 298.0 K and the volume is increased from 24.0 liters to 35.0 liters by moving a large piston wit
Triss [41]

Answer:

The final pressure is approximately 0.78 atm

Explanation:

The original temperature of the gas, T₁ = 263.0 K

The final temperature of the gas, T₂ = 298.0 K

The original volume of the gas, V₁ = 24.0 liters

The final volume of the gas, V₂ = 35.0 liters

The original pressure of the gas, P₁ = 1.00 atm

Let P₂ represent the final pressure, we get;

\dfrac{P_1 \cdot V_1}{T_1} = \dfrac{P_2 \cdot V_2}{T_2}

P_2 = \dfrac{P_1 \cdot V_1 \cdot T_2}{T_1 \cdot V_2}

P_2 = \dfrac{1 \times 24.0 \times 298}{263.0 \times  35.0} = 0.776969038566

∴ The final pressure P₂ ≈ 0.78 atm.

4 0
2 years ago
Other questions:
  • What changes if the degree (amount) of intermolecular bonds of a substance are changed?
    7·2 answers
  • A 0.89% (w/v) sodium chloride solution is referred to as physiological saline solution because it has the same concentration of
    14·1 answer
  • According to the following reaction, how many moles of Fe(OH)2 can form from 175.0 mL of 0.227 M LiOH solution? Assume that ther
    10·1 answer
  • Identify the species oxidized. 2 al3+(aq) + 2 fe(s) → 2 al(s) + 3 fe2+(aq)
    10·1 answer
  • Two weak acids, A and B, have pKa values of 4 and 6, respectively. Which statement is true?A) Acid A dissociates to a greater ex
    12·1 answer
  • A beaker holds 962 g of a brine solution that is 6.20 percent salt. If 123g of water are evaporated from the beaker, how much sa
    15·1 answer
  • When a candle is lit and allowed to burn for 15 minutes, some wax drips and collects at the base of the candle, and the candle b
    13·1 answer
  • What type of radioactive decay will the isotopes 13B and 188Au most likely undergo?
    11·1 answer
  • Natasha and Reanna observe a large airplane in the troposphere. Which experimental setup below would best determine how changing
    6·2 answers
  • Consider the energy diagram below.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!