Explanation:
bro this question looks like Astrophysics
By using the universal gravitational law, the gravitational force between the lander and the planet is 688.4 × 10³ N. The acceleration due to gravity of the lander is 6.25 m/s² . The slight changes in gravity may be due to the change with different latitudes of the planet.
What is gravitational force?Gravitational force is the force by which an object attracts other objects into its center of mass. According to universal gravitational law, the gravitational force can be calculated for two masses m1 and m2 at a distance of r with gravitational constant G as follows:
g = G m1m2/r²
Apply the given values of mass and orbital radius to the equation as follows:
g = (6.647 × 10⁻¹¹ N m² Kg⁻²) (1.1 × 10⁵ Kg × 7.6×10²⁴ Kg ) / (9 × 10⁶ m)²
= 688.4 × 10³ N.
The acceleration due to gravity of the lander = force /mass
= 688.4 × 10³ N /1.1 × 10⁵Kg
= 6.25 m/s²
The actual force of gravity may change from the may slightly change from the calculated value because different latitudes will experience different gravity.
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What occurs when solid A, at 50.0°C, is place in liquid B, at 80.0°C?
A Heat energy flows from A to B as the average kinetic energy of the particles in A decreases
B Heat energy flows from A to B as the average kinetic energy of the particles in A increases
CHeat energy flows from B to A as the average kinetic energy of the particles in B decreases
D Heat energy flows from B to A as the average kinetic energy of the particles in B increases
Provide a set of step by step instructions to make 750 mL of 1.5 M calcium chloride solution.
Answer: PLease see answer in explanation column
Explanation:
FIRST STEP
We find the grams ( mass ) of solute required to prepare the solution by using the formula
grams ( mass ) of solute, g(CaCl2)= Molar mass x Molarity of the solution x Volume of the solution
Therefore Preparing 750 mL of 1.5 M calcium chloride solution, we have that Molar mass of Calcium chloride =110.98 g/mol
g(CaCl2) =110.98 g/mol X 1.5mol/L X 0.75L
g(CaCl2) =124.8525g CaCl2
SECOND STEP
Now Dissolve 124.8525g CaCl2 in about 350ml of distilled water then add more water until the final volume be comes 750ml
In H20 does the 2 apply to
Hydrogen, Oxygen, or Both?
Answer:
The difference is due to the fact that one water molecule has two hydrogen atoms to one oxygen atom, as explained above. This means it takes two water molecules (2 H2O) to make one oxygen molecule (O2)
Explanation:
Answer:
In H20 does the 2 apply to Hydrogen
Explanation:
In H₂O there is two atoms of hydrogen and 1 atom of Oxygen
Hence, In H20 does the 2 apply to Hydrogen
-TheUnknownScientist
How many molecules of As4010 are in 6.2 mol of As4010?
PLEASE HELP
Activation energy is
a. the energy required to form the activation complex.
b. the net energy difference between the products and reactants.
c. the heat of reaction.
d. free energy.
what is einsteins theory of relativity?
Answer:
The laws of the universe are for all observers, and it was shown that the velocity of light in spacetime will be the same regardless of the subject's speed.
Explanation:
The principle outlines how things behave in time and space, so it could be used to model anything from black hole life to light shifting due to the gravitational, as well as the action of the terrestrial Planets in its orbit. Einstein's most popular hypothesis has far-reaching ramifications.
How many grams in 4.50 moles of NaNO3?
Answer:
382.5 grams
Explanation:
Find the molar mass of NaNO₃ and then multiply the number of moles by that molar mass :)
By what factor does the average kinetic energy of the molecules of gas in an aerosol container increase when the temperature is raised from 300 K to 900 Κ?
Answer:
The average kinetic energy is increased by a factor of 3.
Explanation:
The average kinetic energy is given by:
[tex] \overline{E} = \frac{3}{2}kT [/tex]
Where:
k: is the Boltzmann constant
T: is the temperature
When the temperature is 300 K we have:
[tex] \overline{E_{1}} = \frac{3}{2}300k [/tex]
Now, when the temperature is 900 K:
[tex] \overline{E_{2}} = \frac{3}{2}900k = 3(\frac{3}{2}300k) = 3\overline{E_{1}} [/tex]
Therefore, when the temperature is raised from 300 K to 900 Κ, the average kinetic energy is increased by a factor of 3.
I hope it helps you!
How many grams is 2.40 x 1023 molecules of N,O,? (5 pts)
PLS HELP ASAP
Answer:
30.26 grams of N₂O₃
Explanation:
Divide by Avogadro's number. This leaves you with the number of moles. Then, multiply by the molar mass of N₂O₃
Which of the following molecules is correctly paired with its macromolecule class? (2 points)
Enzyme-nucleic acid
Cholesterol-protein
Glycogen-protein
RNA-nucleic acid
Even though the same amount of energy was transferred into both substances from the air, the isopropanol evaporated while the water did not. Why do you think the isopropanol changed phase, but the liquid water did not ... Earlier in the lesson, you observed isopropanol and water drops on a paper towel.HELP HELP PLS
Answer:
The isopropanol evaporated while the water did not because the molecules don't stick together as strongly as the molecules in the water do. The water would need more energy transferred in, in order to evaporate.
Explanation:
The isopropanol evaporates and the water does not because the heat capacity and the latent heat of isopropanol is far lesser than that of water.
The latent heat of vaporization is the amount of heat required by a given amount of substance to change its phase from liquid to gas. The latent heat of vaporization of isopropanol is far less than water, so at the same amount of heat, the isopropanol changes phase as it can easily evaporate even if a small amount of heat is provided. Whereas water requires to absorb a lot of heat energy to change its phase, since its latent heat of vaporization and specific heat capacity is very large as compared to isopropanol.
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The amount of energy transferred per unit time by an electrical appliance is measured in what? Give the
name not the symbol.
Answer:
The Watt
Explanation:
Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.
The amount of energy transferred per unit time is called power, and power is measured in Watt.
What is Watt?Watt is the unit of power. It is used to measure the transfer of power. This is named after James Watt.
When one joule of energy is transferred in one second, this is the power of the Watt.
Thus, the amount of energy transferred per unit time is called power, and power is measured in Watt.
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Which of the following relationships can be measured in light years?
the length of time it takes light to reflect from a plane mirror
the amount of light absorbed by the Earth
the index of refraction of a mirage
the distance between stars and galaxies
All of the choices are correct.
The ocean has both deep currents and surface currents moving it around the Earth.
1.True
2.False
Answer: 1
Explanation: This is true.
Help I need help with this :(
Answer:
biomass is a plant of animal material used as fuel to produce electricity
Tidal power is energy harnessed by converting engery from tides
That's what I know so far and took notes on hope it helped:)
what is the number of moles in 60g of NaCI?
Answer:
58.44277 I hope this works best of luck for you
All of the following are ways to increase the speed at which a solute dissolves into a solvent except:
A Increasing the heat of the solution
B Stirring or shaking the solution
C Freezing the solution
D Crushing the solvent into smaller pieces.
Which organ is most directly involved in the excretion of waste products? Please help
Answer:
Explanation:
The liver
Answer:
Kidney
Explanation:
Write a scientific explanation that explains how organelles perform specific tasks within cells.
USE CER (Claim Evidence Reasoning)
Answer:
Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell. ... It also provides a track-like system that directs the movement of organelles and other substances within cells. Endoplasmic reticulum (ER) This organelle helps process molecules created by the cell
Organelles perform specific tasks within the cells such as protein synthesis, energy production, etc.
Organelles are specialized structures that perform different functions in the cells. Examples of organelles include lysosome, nucleus, chloroplast, mitochondria, endoplasmic reticulum, etc.
It should be noted that every cell process is done in a particular location in the cell. Some of the functions that are performed by the organelle include processing of food and waste, protein synthesis, energy production, replication, etc.
For example, the nucleus is used for the storage of DNA, mitochondria is vital for energy production, the ribosome is necessary for protein synthesis, etc.
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How can I express the composition of a solution?
Answer:
It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...
Explanation:
It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...
Which of the following statements describes the elements in group 16 of the periodic table?
No links!
Answer:
C.
Explanation:
Which of the following represent Dinitrogen tricarbide
1) NC
2) NC2
3) N2C2
4) N203
Answer:
I think is nc2 that representsScience and there is a picture
Answer:
c solid metal
Explanation:
it's made of iron and nickel
Answer:
D) solid metal
Explanation:
Unlike the mineral-rich crust and mantle, the core is made almost entirely of metal—specifically, iron and nickel. The shorthand used for the core's iron-nickel alloys is simply the elements' chemical symbols—NiFe. Elements that dissolve in iron, called siderophiles, are also found in the core.
The inner core is solid because it is made of very dense, or heavy, materials - like iron and nickel. Even though it is very hot, these materials don't "melt" very easily, so they stay solid.
4. What coefficients do you need to balance the following equation?
CH4 + O2 + CO2 + H2O
O 1, 2, 1, 2
O 2, 1, 1, 1
O 1, 1, 1, 1
O 2, 1, 2, 2
Answer:
option first is the right answer
4 Weathering Assessment
2 of 132 of 13 Items
Question
POSSIBLE POINTS: 5.88
On a hot summer day, you and your friend decide to make a drink by mixing ice cubes, water, sugar, and Kool-Aid mix. Which of the following statements best describes what type of change has occurred?
This is an example of chemical change because the sugar dissolved.
This is an example of chemical change because the sugar dissolved.
This is an example of a physical change because the sugar dissolved
This is an example of a physical change because the sugar dissolved
This is an example of a physical change because the ice cubes began to melt.
This is an example of a physical change because the ice cubes began to melt.
This is an example of a chemical change because the Kool-aid dissolved and turned the water red.
Answer:
This is an example of chemical change because the Kool aid dissolved and turned the water red
PLEASE HELP!!! Just need an answer, no explanation
Answer: N2
blah blah blah blah blah blah
Write a balanced equation for the following:
1. P4 + O2 → P2O5
2. C3H8 + O2 → CO2 + H2O
3. Ca2Si + Cl2 → CaCl2 + SiCl4
What object would have more gravitational potential energy, a skydiver up in the air inside of a plane, or that same skydiver after he/she has jumped out of the plane?
Answer:
Gravitational potential energy is a direct function of weight and height. Higher the object, high is the gravitational potential energy.
Therefore the skydiver inside of the plane has high gravitational potential energy than the same diver after she has jumped because height is now decreased as he is going down.
10. How many moles of glucose are in 0.5L of a 0.138M solution of glucose in
water?
Answer:
0.069 moles of glucose
Explanation:
(0.138 mol/L)(0.5 L) = 0.069 moles of glucose
Answer:
[tex]\boxed {\boxed {\sf 0.069 \ mol \ C_6H_12O_6}}[/tex]
Explanation:
Molarity is the moles per liter of a solution. It is found by dividing the moles of solute (glucose) by the liters of solution (water).
[tex]M= \frac {moles}{liters}[/tex]
We know the molarity is 0.138 M. 1 M is equal to 1 mole per liter, so we can rewrite the molarity as 0.138 moles per liter.
There are 0.5 liters of solution.
We are solving for the moles, so we can use x.
[tex]0.138 \ mol/L= \frac {x }{0.5 \ L}[/tex]
We must isolate the variable (x) to solve for the moles. It is being divided by 0.5 liters. The inverse operation of division is multiplication. Multiply both sides of the equation by 0.5 L.
[tex]0.5 \ L *0.138 \ mol/L= \frac {x }{0.5 \ L}* 0.5 \ L[/tex]
The liters on both sides cancel.
[tex]0.5 *0.138 \ mol= {x }[/tex]
[tex]0.069 \ mol =x[/tex]
[tex]0.069 \ mol \ C_6H_12O_6[/tex]
Ther are 0.069 moles of glucose in a 0.138 M solution with 0.5 liters of water.
and heat.
4 Which increases the kinetic energy of the
particles that make up a bowl of soup?
A. dividing the soup in half
B. putting the soup in a refrigerator
C. heating the soup
for 1 min on a stove
D. decreasing the distance between the
particles that make up the soup