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
Andrej [43]
2 years ago
11

At the carnival, a baby was given a helium balloon whose

Chemistry
1 answer:
Pani-rosa [81]2 years ago
8 0

Answer: 0.048 kPa

Explanation: no clue i just looked it up you’re welcome y’all:)

You might be interested in
This is science help me pls
jek_recluse [69]
Remember velocity = distance/time so that mean you would do 60/3 which equals 20 so the speed(velocity) equals 20
6 0
2 years ago
How many individual atoms are represented in the reactants of the equation shown below?
Soloha48 [4]

Answer:

There are 8 hydrogen atoms on the product side in the reaction.

Explanation:

6 0
2 years ago
Calculate ∆G ◦ r for the decomposition of mercury(II) oxide 2 HgO(s) → 2 Hg(ℓ) + O2(g) ∆H◦ f −90.83 − − (kJ · mol−1 ) ∆S ◦ m 70.
bagirrra123 [75]

Answer:

4. +117,1 kJ/mol

Explanation:

ΔG of a reaction is:

ΔGr = ΔHr - TΔSr <em>(1)</em>

For the reaction:

2 HgO(s) → 2 Hg(l) + O₂(g)

ΔHr: 2ΔHf Hg(l) + ΔHf O₂(g) - 2ΔHf HgO(s)

As ΔHf of Hg(l) and ΔHf O₂(g) are 0:

ΔHr: - 2ΔHf HgO(s) = <u><em>181,66 kJ/mol</em></u>

<u><em /></u>

In the same way ΔSr is:

ΔSr= 2ΔS° Hg(l) + ΔS° O₂(g) - 2ΔS° HgO(s)

ΔSr= 2* 76,02J/Kmol + 205,14 J/Kmol - 2*70,19 J/Kmol

ΔSr= 216,8 J/Kmol = <em><u>0,216 kJ/Kmol</u></em>

Thus, ΔGr at 298K is:

ΔGr = 181,66 kJ/mol - 298K*0,216kJ/Kmol

ΔGr = +117,3 kJ/mol ≈ <em>4. +117,1 kJ/mol</em>

<em></em>

I hope it helps!

5 0
3 years ago
Iron has a density of 7.87 g/cm3. What is the volume in cm3 of 3.729 g of iron?
KIM [24]

If iron has a density of 7.87g/cm³ and a mass of 3.729g, then the volume of iron is 0.474cm³

HOW TO CALCULATE VOLUME:

  • The volume of a substance can be calculated by dividing the mass by its density. That is;

Volume (mL) = mass (g) ÷ density (g/mL)

  • The density of iron is given as 7.87g/cm³ while its mass is 3.729g of iron. Hence, the volume can be calculated as follows:

Volume = 3.729 ÷ 7.87

Volume = 0.474cm³

Therefore, the volume of iron is 0.474cm³

Learn more: brainly.com/question/2040396?referrer=searchResults

6 0
2 years ago
What is the current temperature to the nearest degree for the thermometer shown below?
padilas [110]
There is no temperature at all shown below. Is that the same as Absolute Zero ?
3 0
2 years ago
Read 2 more answers
Other questions:
  • WILL RATE AND GIVE BRAINLIEST!!
    12·2 answers
  • Compute 4.659×104−2.14×104. Round the answer appropriately.
    11·1 answer
  • Really need HElp with my chemistry question
    15·1 answer
  • What is the percent of N in NH3?
    5·1 answer
  • Some COCl2 is placed in a sealed flask and heated to 756 K. When equilibrium is reached, the flask is found to contain COCl2 (7.
    11·1 answer
  • Which of the following is a characteristic of the lanthanides?
    6·2 answers
  • Can someone figure this out for me thank you
    5·1 answer
  • A force of 100 newtons was necessary to lift a tree. A total of 50 joules of work was done. How far was the tree lifted
    11·1 answer
  • ¿por que biomasa es una energía limpia y renovable, si al final los productos como biodiesel e los pellets se queman y esa combu
    10·1 answer
  • Calculate the molecular mass of the element
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!