Answer this please t Lol

Do you think a colony on Mars should be nearer the northern or southern polar cap? Explain.

xxTIMURxx [149]

Answer:Hola TvT

Explanation:When the Martian polar caps were first viewed through telescopes, most scientists believed that they were made of water ice, like the polar caps on Earth. Like Earth, Mars has a North and South Pole. But while Earth's polar ice caps consist solely of water ice, Mars' polar caps are a combination of water ice and carbon dioxide ice. As the Martian seasons change, the carbon dioxide ice sublimates (vaporizes) in summer, revealing the surface, and freezes again in winter. As fall approaches, in each respective hemisphere, clouds begin to form over the polar region and the ice cap begins to grow. In spring, the polar caps recede...........Aside from ice, Mars' polar regions have some interesting geologic features. The north polar dune field is a vast concentration of sand dunes that stretches around the entire north polar cap. In some areas, the sand measures up to 500 km (300 miles) across. When the dunes begin to thaw in spring, dark spots form on their surfaces. The north polar dunes were first seen during the 1972 mapping of Mars by Mariner 9, and they are identical to dunes in Earth's desert regions..

bye bye UnU

4 0

3 years ago

What does the mass of an object depend on?

Dmitriy789 [7]

Answer:

the mass of an object depends on inertia greater is the inertia greater will be the mass or vice versa

Explanation:

hope it help ^_^

6 0

3 years ago

Consider the following statements about first ionization energies: Because the effective nuclear charge for Mg is greater than t

Tom [10]

Answer:

I FALSE II FALSE III TRUE

Explanation:

Stament I : Because the efective nuclear charge for Mg is greater than that for Be, the first ionization energy of Mg is greater than that of Be. FALSE

The first ionization energy decreases as we go down a group because of the shielding efect electrons have on the farthest electron that is going to be ionized. That is the ionized electron is shielded from its nucleus because we are filling higher energy levels.

Statement II :The first ionization enery of O is less than that of N because in O we must pair electrons in the 2p orbital. FALSE

Again we have the shielding effect of electrons on the first electron to ionize. This effect does not have anything to do with the pairing of electrons in the 2p orbital. since as we go across a row in the periodic table we are increasing the number of electrons. The first electron to ionize thus will see less of its nucleus and therefore O will have a lower first ionization energy.

Statement III : The first ionization energy of Ar is less than that of Ne because a 3p electron in Ar is farther from the nucleus than a 2p electron in Ne. TRUE

This is another way to say the shielding effect is responsible for the first ionization energy being in Ar is less than that of Ne. The electron is shielded from a nucleus with a higher atomic number and it is farther away ( 3p vs 2p orbital)

4 0

3 years ago

If 12.2 kg of Al2O3(s), 57.4 kg of NaOH(l), and 57.4 kg of HF(g) react completely, how many kilograms of cryolite will be produc

PilotLPTM [1.2K]

<h2>Answer: kilograms of cryolite ≈ 50.23 kg</h2>

Explanation:

Write the balanced equation

Let's start off by writing the reaction for the formation of cryolite:

Al₂O₃ + 6NaOH + 12HF → 2Na₃AlF₆ + 9H₂O

Determine the limiting factor

moles = mass ÷ molar mass

moles of Al₂O₃ = 12200 g ÷ 101.96 g/mol = 119.65 mol

moles of NaOH = 57400 g ÷ 39.997 g/mol = 1435.11 mol

moles of HF = 57400 g ÷ 20.01 g/mol = 2868.57 mol

Since Al₂O₃ has the smallest number of moles in the reaction, it is the limiting factor. As such we will have to use the moles of Al₂O₃ to determine the moles of cryolite that will be produced.

Find the mole ratio between the limiting factor and the cryolite

The mole ratio of Al₂O₃ : Na₃AlF₆ based on the balanced equation is 1 : 2

∴ since the moles of Al₂O₃ = 119.65 mol

the moles of Na₃AlF₆ = 119.65 mol × 2 = 239.3 mol

Calculate the mass of the Cryolite

Mass cryolite = moles × molar mass

= 239.3 mol × 209.9 g/mol

= 50229.07 g

∴ kilograms of cryolite ≈ 50.23 kg

6 0

3 years ago

You are picking an order and come across a box of perfume. What should you do? Please choose all that apply

Travka [436]

Is there a picture to go with it?

8 0

3 years ago