Please help me out ........

Answer:

273k

Explanation:

Soooo... This is a complicated problem.

I dunno. Like... Is this a trick question? Trivia, maybe?

Nahhhhh...

It's just not telling us facts...SOME facts, but we need to use past learning to help us.

FIRST of all, what the heck does K even mean?

Is this a memo? A demo? A KO?

Okay, it's nither of these things.

So, let me tell you what the "K" means.

The K means "Kelvin" which is basically a word form for "-"

I AM NOT MAKING A FACE. IT'S THE WORD FORM FOR MINUS. STOP LAUGHING!!!!

And so... To bring objects to a COMPLEETE SKRRRRRRRRRRRRRRRRRRRRRRT...

It will need to be -273.

This means that the answer is 273k.

Which reminds me, Ima play 2k.

And ima rap to-day.

And now I'm being lame.

Just answer the question :/

Answer:

MgCl2

Explanation:

because of the salt containing Cl

Answer:

True

Explanation:

I checked several websites to double check for you.

Answer:

Except for hydrogen and some helium created in the Big Bang, all of the stuff we, and the Earth around us, are made of, was generated in stars, through sustained fusion or in supernova explosions i thank its true :) hope this helps

Answer: is this what your looking for?

Explanation: One mole of anything, no matter what the element is, is Avogadro's number, which is 6.02 * 10^23 atoms.

One mole of Calcium is equal to it's atomic weight in grams :

1 mole Ca = 40.08 g = 6.02 * 10^23 atoms

There is a 1000mg in a gram. 1000mg * 40.08g =  

=40,080mg of Ca per mole

If you have 8.6mg of Ca that is 8.6mg / 40,080mg = .00021457 of a mole of calcium

so just multiply that by Avogadro's number to give you number of atoms:

.00021457 * 6.02 * 10^23 atoms = 1.292 * 10^20 atoms of Ca

A mole is the amount (10) of material containing [tex]6.02214 * 10^{23}[/tex] particles.

1 mol =  [tex]6.02214 * 10^{23}[/tex] particles. This number is also called Avogadro's number

One mole of Calcium is equal to it's atomic weight in grams :

[tex]\text{1 mole Ca} = 40.08 g = 6.02 * 10^{23} \text{ atoms}[/tex]

a) 1g=1000mg

[tex]1000\text{ mg} * 40.08g = 40,080 \text{ mg of Ca per mole}[/tex]

If you have 8.6mg of Ca that is

[tex]\frac{8.6mg}{40,080mg} =0 .00021457 \text{ mole of Ca}[/tex]

In terms of Avogadro number:

[tex]0.00021457 * 6.02 * 10^{23} atoms = 1.292 * 10^{20} \text{ atoms of Ca}[/tex]

b) The number of moles of H₂O will be:

[tex]3.4*10^{26}*6.022*10^{23}\\\\20.47*10^{49} \text{moles}[/tex]

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Answer: Part A / The four quantum numbers tell you the location and energy of an electron.

Part B / _C_ Defines the electron's orbital

            _A_ Defines the electron's energy level

            _D_ Defines the electron's spin

            _B_ Defines the electron's sublevel

Answer:  The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound.

Explanation:

Answer:

1 L of O2 reacts with 2 L of SO2.

Explanation:

From the balanced equation, 1 mol of oxygen

reacts with 2 mol sulfur dioxide.

Answer:

salt

Explanation:

because it has a much larger volume ratio

Answer:

11

Explanation:

Answer:

1260 mL

Explanation:

Use formula (P1V1)/T1 = (P2V2)/T2

convert C to K

120 +273 = 393 K

20 + 273 = 293 K

plug numbers in

((1160)(1020))/ 393 = ((V2)(700))/ 293

solve for V2

V2 = 1260.187 mL

There are four. Fe, H, C, and O

Answer:

If they are pushing off the wall, it would be B, as they are going faster. If they are slowing down, it would probably be A, gradually getting slower.

Explanation:

Answer:

0.852 mol

Explanation:

First we convert 4.00 g of helium (He) into moles, using its molar mass:

4.00 g ÷ 2 g/mol = 2 mol He

To answer this problem we can use Avogadro's law, which states that at constant pressure and temperature:

V₁n₂=V₂n₁

Where:

We input the data:

And solve for n₂:

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also equal to the number of electrons.

Answer:

its basically represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines the place of the element in the periodic table

Explanation:

sry i its too long

hope it helps

Answer:

The Concrete has a lower specific heat.

Explanation:

Answer:

Copper, Lead, Gold, Silver, Iron, Carbon, Tin, Sulfur, Mercury, Zinc, Arsenic, Bismuth, Phosphorus, Cobalt, Platinum, Nickel, Magnesium, Hydrogen, Oxygen,  Nitrogen, Barium, Chlorine,  Manganese, Molybdenum, Tungsten.

Explanation:

Hope This Helps :b

Answer:

Vanadium

V

Chromium

Cr

Manganese

Mn

Aluminum

Al

Silicon

Si

Phosphorus

P

Sulfur

S

Chlorine

Cl

Argon

Ar

Potassium

K

Calcium

Ca

Scandium

Sc

Titanium

Ti

Lithium

Li

Beryllium

Be

Boron

B

Carbon

C

Nitrogen

N

Oxygen

O

Fluorine

F

Neon

Ne

Sodium

Na

Magnesium

Mg

Answer:

1e - 11

Explanation:

Answer:

B. HCl, C. H2SO4, F. HNO3

Explanation:

Acids have hydrogen (H) at the beginning

bases have OH at the end

HCl, H₂SO₄,HNO₃ are the chemical formulas which represent acids.

Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste. Out of the following , given sets of compounds HCl, H₂SO₄ and HNO₃ are acids as they yield H+ ions on dissociation.

According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic  acids  depending on the number of protons which are liberated on dissociation.

Acids are widely used in industries  for  production of fertilizers, detergents  batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.

Learn more about acids,here:

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Answer:

Photosynthesis is the process takes place in green plants in which the plants convert the carbon dioxide and water into the sugar molecule and oxygen in presence of the sunlight. The sunlight is trapped by the chlorophyll pigment, carbon dioxide uptake is facilitated by the stomata present on the leaves in the epidermis.

The water moves from the roots to the leaves and stem where it is used for photosynthesis and transpiration. The movement of water is through the xylem and sugar is move through the phloem from the leaves to a different part of the plant for nutrition and further process.

Answer:

Both the forward and the reverse reaction rates decrease.i hope I help you to day and have a good day

Answer:

the molecular formula of a compound is P₄O₁₀.

M(P₂O₅) = 2 · Ar(P) + 5 · Ar(O) · g/mol.

M(P₂O₅) = 2 · 31 + 5 · 16 · g/mol.

M(P₂O₅) = 142 g/mol; molar mass of empirical formula.

M(PₓOₙ) = 284 g/mol; molecular mass of unknown compound.

M(PₓOₙ) : M(P₂O₅) = 284 g/mol : 142 g/mol.

M(PₓOₙ) : M(P₂O₅) = 2 : 1.

Explanation:

The  empirical formula is [tex]P_{2}O_{5}[/tex]  and The molecular formula is [tex]P_{4}O_{10}[/tex]

[tex](\frac{47.3g}{1})( \frac{1 mol}{30.97g})= 1.41 moles[/tex] of Phosphorus.

[tex](\frac{56.3}{1})(\frac{1 mol}{16}) = 3.51 moles[/tex] of Oxygen

3.51/1.41 = 2.49 (rounded off 2.5)

1.41/1.41 = 1

2.5 *2 = 5 (Oxygen)

2 *1 = 2 (Phosphorus)

Hence  [tex]P_{2}O_{5}[/tex]  is Empirical formula

and [tex]P_{4}O_{10}[/tex] is Molecular Formula

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Answer:

0.0107 mol

Explanation:

Multiply concentration by volume (in liters) to get moles.

0.5 M • 0.0213 L = 0.0107 mol

Answer:

proton donar

proton acceptor

Explanation:

From the given information of the question, Arrhenius acid and base concept is explained, from which a better term to define an acid and base is defined, known as The Bronsted-Lowry acid base theory.

According to The Bronsted-Lowry acid base theory -

An acid is the species which can readily donate a proton, where as, a base is the species, which can readily accept a proton.

Hence, the correct answer is as follow -

proton donar

proton acceptor

Answer:

proton donar

proton acceptor

Explanation:

Answer:

Explanation:

Freezing water can break rock without any change in the minerals that form the rock (physical weathering). This usually produces small particles and sand. Water with dissolved gases and other chemicals causes the minerals in rocks to be changed, leading to the deterioration of the rock (chemical weathering).

chemical weathering

Explanation:

freezing water when mix with it cause detorilation of rocks

Answer:

A diamond contains 5.0 x 10 21 atoms of carbon.

Answer:

Its axis is tilted by 26.73 degrees with respect to its orbit around the Sun, which is similar to Earth's 23.5-degree tilt. This means that, like Earth, Saturn experiences seasons. Like Jupiter, Saturn is made mostly of hydrogen and helium.

Explanation:

Thats all I could think of, please mark brainliest

Answer:

0.00331M

Explanation:

Molarity of a solution can be calculated as follows:

Molarity = number of moles (n) ÷ volume (V)

In the information provided in this question, the volume = 502mL = 502/1000 = 0.502L, mass of caffeine = 0.322g

Molar mass of caffeine (C8H10N4O2), where C = 12, H = 1, N = 14, O = 16 is as follows:

Molar mass = 12(8) + 1(10) + 14(4) + 16(2)

= 96 + 10 + 56 + 32

= 194g/mol

Using, moles = mass/molar mass

moles = 0.322/194

moles = 1.66 × 10-³ moles

mole = 0.00166mol

Molarity = number of moles ÷ volume

Molarity = 0.00166mol ÷ 0.502L

Molarity = 0.00331M.