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3 years ago

Why do black holes have a massive force of gravity?

Chemistry

1 answer:

Rudiy273 years ago

6 0

<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2>

$\huge\boxed{OptionB}$

<h2>_____________________________________</h2><h3>BLACK HOLES:</h3>

A black hole is a region of spacetime where gravity is so strong that nothing no particles or even electromagnetic radiation such as light can escape from it. Black holes are caused because of a supernova. A supernova is an exploding star that blasts part of the star into space.

<h2>_____________________________________</h2><h3>Why does it have so strong gravity?</h3>

The gravity is so strong because matter has been squeezed into a tiny space. That means, the large mass centers into the small diameter so Large mass comes in the small diameter which makes the strong gravity.

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2>

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HCl(?) + H2O(?) → H3O+(?) + Cl-(?) <br><br> What is the phase label on Cl-?

viva [34]

Answer:

H30,+ion is known as Hydroniom Ion

Explanation:

brain ly ----

everyday

brainless this answer is correct

6 0

3 years ago

The mass percentage of hydrochloric acid within a solution is 15.00%. given that the density of this solution is 1.075 g/ml, fin

Morgarella [4.7K]

Given the mass percentage of HCl solution = 15.00 %

This means that 15.00 g HCl is present in 100 g solution

Moles of HCl = $15.00 gHCl*\frac{1 mol HCl}{36.46 g HCl} =0.411molHCl$

Density of the solution = 1.075 g/mL

Calculating the volume of solution from density and mass:

$100 g *\frac{1mL}{1.075 g} =93.0 mL$

Converting volume from mL to L:

$93.0 mL * \frac{1 L}{1000 mL} =0.093 L$

Calculating the molarity of HCl solution from moles and volume:

$\frac{0.411 mol}{0.093 L} =4.42 mol/L$

8 0

4 years ago

This atom tends to gain an electron in its outer shell so that there are a total of 8 electrons.

Archy [21]

oh its a Chlorine isn't it....

it's electronic configuration is

2,8,7

so to make it 8 in its outermost shell it should gain 1 electron...

5 0

3 years ago

Balance each of the following chemical equations.

Bezzdna [24]

Answer:

Explanation:

The question states that the chemical equations should be balanced and the phases should also be indicated. The abbreviations of the phases have been indicated in the question with

i) (s) meaning the compound is in solid

ii) (aq) meaning the compound is in aqueous form

iii) (l) meaning the compound is in liquid

iv) (g) meaning the compound is in gaseous form

Balanced chemical equation is that in which the number of individual atoms on the reactant side is equivalent to the number of the same individual atoms on the product side.

Only the answer (the balanced chemical equations) will be written below.

A) This reaction is balanced

Mg(s) + Br₂(l) ⇒ MgBr₂(s)

B) P₄(s) + 5O₂(g) ⇒ P₄O₁₀ (s)

C) Ba(OH)₂(aq) + 2HNO₃(aq) ⇒ Ba(NO₃)₂(aq) + 2H₂O

D) Cr₂O₃(s) + 3C(s) ⇒ 2Cr(s) + 3CO(g)

4 0

3 years ago

How many liters of water are needed to make a 4.00 M solution using 75.0

timurjin [86]

Answer:

0.22L

Explanation:

Given parameters:

Concentration of solution = 4.00M

Mass of lithium Bromide = 75g

Unknown:

Volume of water = ?

Solution:

Concentration in terms of the molarity is the number of moles of solute in a solution.

Molarity = $\frac{number of moles }{volume of solution}$

let us find the number of moles first;

Number of moles = $\frac{mass}{molar mass}$

Molar mass of LiBr = 7 + 80 = 78g/mol

number of moles = $\frac{75}{78}$

number of moles = 0.96moles

Volume of water = $\frac{number of moles }{molarity}$ = 0.96/4 = 0.22L

7 0

3 years ago