Where might life exist in the solar system beyond earth

Answers

Answer 1

Answer: Some people theorize that there could be life on Mars. The idea came from the fact that Mars and Earth are similar. However Mars' core cooled long ago which means it has no magnetic field which means that its atmosphere is being striped away and surface is bombarded with harmfull radiation from the sun so the prospect of current life is not as good adult could be. Another place is Jupiter's moon Europa. There is evidence indicating that there is a liquid ocean order the icy surface of the moon which which would explain the cracks we see on the surface. Many scientists beleive that this ocean under the surface could harbor life. I hope this helps. Let me know if anything is unclear

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8. Which of the following statements about non-metals is correct?O A. Non-metals tend to have low ionization energy and high electronegativity.
B. Non-metals tend to have high ionization energy and high electronegativity.
O C. Non-metals tend to have low ionization energy and low electronegativity.
D. Non-metals tend to have high ionization energy and low electronegativity.

Answers

The statement about non-metals that is correct is B. Non-metals tend to have high ionization energy and high electronegativity.

A non-metal doesn't she the characteristics of a metal. It has poor thermal and electrical conductivity. Also, non-metals have a low melting point and low density.

On the other hand, mon-metals have high ionization energy, high electronegativity, and high electron affinity. When there react with other elements, they gain electrons.

Read related link on:

brainly.com/question/1494948

Answer:

The correct answer is option B, that is, non-metals tend to exhibit high electronegativity and ionization energy.

Explanation:

A chemical element, which is primarily devoid of the feature of metal is termed as a non-metal. A non-metal generally exhibit poor electrical and thermal conductivity and is brittle in solid-state. The non-metals generally possess a comparatively low boiling and melting point and also has low density.

Chemically, the non-metals exhibit comparatively high electron affinity, high electronegativity, and high ionization energy. Upon reaction with other elements and chemical compounds, these elements share or gain electrons. The non-metals are typically seventeen in number and are differentiated into two kinds, that is, noble gases and reactive non-metals.

How does a magnet separate mixtures?

Answers

It can only do that when one of the components of the mixture is a magnetic
material.

When you have that situation, you pass the magnet over the mixture ... shaking
the mixture if it's a dry mixture of powders or pieces ... and the magnetic part of
the mixture moves toward the magnet, while the nonmagnetic parts of the mixture
couldn't care less about the magnet and they just stay where they are.

It will separate when one of the elements found in the mixture is magnetic. This process can't be done in a compound as a compound is chemically bonded!

How long is a red blood cell

Answers

I suspect this question should read "How long does a red blood cell live." A red blood cell lives for between 100 and 120 days. It takes 7 days for a new red blood cell to develop from stem cells. Stem cells are similar to base cells. They can also be seen as a general template from which specialized cells are made. Stem cells can be taken from a newborn baby's umbilical chord or extracted from an adult blood donor's blood.This

The process in which rocks are formed, change, and broken down is called

Answers

the rock cycle im pretty sure i think it is or it is called weathering

Fernando places 50 mL of HCl in a 100 mL beaker and 50 mL of NaOH in a 100 mL beaker. he places them on a scale together and measures a combined mass of 15.00 grams. he then mixes the liquids together and waits five minutes while they react. to make the HCl used in the experiment, Fernando mixed 10 mL of HCl with 40 mL of water. what are the properties of this mixture? select all that apply.

A. The H2O is the solute.
B. The HCl is the solute.
C. TheHCL is the solvent.
D. The H2O is the solvent.
E. This mixture conducts electricity.
F. This mixture does not conduct electricity.

help!

Answers

Answer:

The correct options are:

B. The HCl is the solute.

D. The H₂O is the solvent.

E. This mixture conducts electricity.

Explanation:

For the preparation of the HCl solution, 10 mL of HCl and 40 mL of water were mixed.

The compound that is present in the solution in a smaller ratio is the solute and the other compount -present in higher ratio- is the solvent.

So, the solute is HCl and the solvent is water (H₂O). Furthermore, water is considered as an universal solvent (for most of the polar and ionic compounds). According to this, the following options are correct:

B. The HCl is the solute.

D. The H₂O is the solvent.

Then, a condition for a solution that is able to conduct electricity is the presence of ions in the solution. When HCl is dissolved in water, it dissociates in ions according to the following equilibrium:

HCl ⇔ H⁺ + Cl⁻

The ions H⁺ and Cl⁻ are electrically charged so the solution can conduct electricity. According to this, the following option is also correct:

E. This mixture conducts electricity.

What is the pH of a solution with (H3O+)=5.6x10-2M?

Answers

Answer:

Explanation:

Given parameters:

Concentration of H₃O⁺ = 5.6 x 10⁻²M

Solution:

To solve for the concentration of H₃O⁺ in the solution, we simply use the expression below:

pH = -log₁₀[H₃O⁺]

where [H₃O⁺] = 5.6 x 10⁻²M is the concentration of H₃O⁺

pH = -log₁₀[5.6 x 10⁻²] = - x -1.25 = 1.25

Answer:

1.25 is the pH of the given solution

Explanation:

We can determine the acidity or the basicity of the solution using the pH value.

The solution is acidic if the pH value ranges from 0 to 6.9

The solution is Basic if the pH value ranges from 7.1 to 14

The solution is neutral if the pH value is 7.

pH is defined as the negative logarithm of the Hydrogen ion concentration, that’s why the formula to find pH is given by

$pH=-log[H^+]$

$pH=-log[H_3O^+]$

$pH=-log[5.6*10^(-2) M]$

$=-(1.25)$

$pH=1.25$

(Answer)

Please note:

When an hydrogen atom loses an electron, Hydrogen ion is formed, which will contain 1 positive proton and 0 negative electron and 0 neutral neutron.

Thus Hydrogen ion has a + charge.

Hydrogen ion is also called as a proton since it has only 1 proton in it.

Hydrogen ion in water that is,

$H^++H_2 O> H_3 O^+$

H_3 O^+ is called as Hydronium ion.

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