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
igomit [66]
3 years ago
8

Does gravity affect the orbit of the international space station

Chemistry
2 answers:
ivanzaharov [21]3 years ago
7 0

Answer:

Explanation:gbbbynuy

B g gyngybfvtfftdtcdt

Serga [27]3 years ago
6 0
GfsdfCngnmsgagmsgme GM bcsmetmrhmerulrr
You might be interested in
How mant grams are there in 7.15 x 10^24 molecules of water?
worty [1.4K]

Answer:

B. 214.02

Explanation:

1 mol of water weighs 18.015 gm and contains 6.023 × 10²³ molecules

From question, We have 7.15 × 10²⁴ molecules

Dividing we get (7.15 × 10 ²⁴) ÷ ( 6.023 × 10²³) = 11.871 molecules

Now, Weight of water = 11.871 × 18.015 = 213.85 which is nearer to option B

4 0
2 years ago
Read 2 more answers
Given the following values for the heats of formation, what is the number of moles of ethane (C2H6, MW 30.0) required to produce
baherus [9]

Answer:

0.641 moles of ethane

Explanation:

Based on the equation:

C2H6(g) + 7/2O2(g) → 2CO2(g) + 3H2O(l)

We can determine ΔH of reaction using Hess's law. For this equation:

<em>Hess's law: ΔH products - ΔH reactants</em>

ΔH = {2ΔHCO2 + 3ΔHH2O} - {ΔHC2H6}

<em>Pure monoatomic substances have a ΔH = 0kJ/mol; ΔHO2 = 0kJ/mol</em>

<em />

ΔH = {2*-393.5kJ/mol + 3*-285.8kJ/mol} - {-84.7kJ/mol}

ΔH = -1559.7kJ/mol

That means when 1 mole of ethane is in combustion there are released 1559.7kJ of heat. To produce 1.00x10³kJ there are needed:

1.00x10³kJ * (1mole ethane / 1559.7kJ) =

<h3>0.641 moles of ethane</h3>
7 0
2 years ago
The reaction below is at equilibrium at a temperature T. There are four possible changes listed. Select all the changes that wil
katovenus [111]

Answer:

The correct answer is B.

Explanation:

Heterogeneous equilibrium is that in which reagents and products are present in more than one phase.

When the reaction is carried out in a closed container, three equilibrium phases are present: solid magnesium oxide, solid magnesium sulfate and gaseous sulfur trioxide.

Hence, the equilibrium contant is given by:

K=\frac{[MgSO_4]}{[MgO][SO_3]} =\frac{1}{[SO_3]}

The concentrations in the equilibrium equation are the relationships of the real concentrations between the concentrations in the standard state. Since the standard state of a pure solid is the pure solid itself, the ratio of concentrations for a pure solid is equal to one.

Now, we analyse each statement:

I) As the reaction is endothermic (ΔH>0), increasing the temperature shifts the balance to the right because excess heat will be used to form more products.

II) Increasing the volume will decrease the concentration of SO₃, so Q>K and then this shifts the balance to the left.

III) As it is a heterogeneous balance, adding MgO will not affect the balance.

IV) Removing SO3 will decrease its concentration and therefore the reaction equilibrium will shift to the left.

6 0
2 years ago
You have 67.2 liters of oxygen at standard temperature and pressure. How many moles of oxygen molecules do you have? *
enot [183]

Answer:

Number of moles is 3.0moles

Explanation:

Volume (v) = 67.2L

Pressure at STP = 1atm

Temperature at STP = 273.15K

R = 0.082J/mol.K

Number of moles (n) = ?

From ideal gas equation,

PV = nRT

P = pressure

V = volume of the gas

n = number of moles

R = ideal gas constant

T = temperature of the gas

PV = nRT

solving for n,

n = PV / RT

n = (1.0 * 67.2) / (0.082 * 273.15)

n = 67.2 / 22.398

n = 3.0 moles

The number of moles present is 3.0

3 0
3 years ago
Different ____ of an element have different numbers of neutrons
goldenfox [79]

Answer:

different elements have different numbers of neutrons.

7 0
3 years ago
Other questions:
  • A gas tank holds 20000 liters at 850 torr. If the temperature remains constant, what will the volume, in L, of the gas be at sta
    8·1 answer
  • How does the amount of freshwater on Earth compare to the amount of saltwater on Earth?
    12·1 answer
  • Habitat ____________ splits ecosystems into pieces and makes populations more vulnerable to disturbances or climate change.
    10·2 answers
  • With the kinetic energy of a sample increases the____ will also increase
    7·1 answer
  • You would predict that iodized salt would have no effect on any cases of ____________.
    8·2 answers
  • Aspirin (C9H8O4) is an acid which can be titrated with a base to determine purity. If an aspirin tablet weighing 0.615 g is titr
    5·1 answer
  • A balloon filled with helium occupies 21.0ft³ at 55.0°F. Find the temperature of the helium if the volume of the balloon decreas
    6·1 answer
  • A4 g sugar cube (Sucrose : C 12 H 22 O 11 ) is dissolved in a 350 ml teacup of 80 C water. What is the percent composition by ma
    11·1 answer
  • Which of the following is the correct set up AND answer to convert 6.25 x
    6·1 answer
  • 100 Point test please help
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!