What is Temperature
Choose 1

Answer:

[tex]\boxed {\boxed {\sf 4.20 *10^{24} \ atoms \ Al }}[/tex]

Explanation:

To convert from moles to atoms, we must us Avogadro's number: 6.022*10²³. This tells us the number of particles (atoms, molecules, etc.) in 1 mole of a substance. In this case, it is atoms of aluminum.

We can use the number as a fraction.

[tex]\frac{6.022*10^{23} atoms \ Al}{1 \ mol \ Al}[/tex]

Multiply by the given number of moles: 6.98

[tex]6.98 \ mol \ Al *\frac{6.022*10^{23} atoms \ Al}{1 \ mol \ Al}[/tex]

The moles of aluminum will cancel.

[tex]6.98 *\frac{6.022*10^{23} atoms \ Al}{1 }[/tex]

The denominator of 1 can be ignored.

[tex]6.98 * {6.022*10^{23} atoms \ Al}[/tex]

Multiply.

[tex]4.203356*10^{24} \ atoms \ Al[/tex]

The original measurement of moles has 3 significant figures, so our answer must have the same.

For the number we calculated, that is the hundredth place. The 3 in the thousandth place tells us to leave the 0.

[tex]4.20 *10^{24} \ atoms \ Al[/tex]

There are about 4.20*10²⁴ atoms of aluminum in 6.98 moles.

Answer:

the reaction is violent and quick

Explanation:

Answer:

metal can hold heat keep it near fire

Answer:

A meteor shower are defined as the celestial event in which a meteor comes from one point in the sky and visible in night sky.

Meteors are also known as Shooting stars as they glow when enters in the Earth surface as glowing streaks, where tail point to the origin in the sky and face faces the Earth surface.

Meteor showers take place when meteoroids entering Earth's atmosphere.

Meteor showers can repeat themselves because it depends on the comet orbits which can take place at the same time each year.

Answer:

true

Explanation:

Answer:

That's simple it's the caca of 54 32 x (5) b ÷ 5683jvl done so your answer is 0

Answer:

Explanation:

The sound waves are bocing off the walls.  

Answer:

es correcto bro claro eres un crak

Answer:

Decomposition Reaction

Explanation:

You can determine the type of reaction by writing out a balanced equation.

Solid Potassium Chlorate: KClO3

Potassium Chloride: KCl

Oxygen Gas: O2

Balanced Equation: 2KClO3 -> 2KCl + 3O2

By definition, a decomposition reaction is when a single substance decomposes into two more simpler substances. AB -> A + B

Because the solid potassium chlorate is breaking into two substances, potassium chloride and oxygen gas, it is a decomposition reaction.

Answer:

[tex]55.1657[/tex] grams/mol of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)

Explanation:

The molecular weight of acetylene is  26.04 g/mol

Molecular weight of carbon is equal to 12.011 g/mol

Two carbon atom produces one acetylene molecule.

Thus, 2 * 12.011 g/mol of carbon is used to produce  26.04 g/mol of acetylene,

Amount of carbon required to produce 59.8 grams of acetylene

[tex]\frac{2*12.011}{26.04} * 59.8 \\= 55.1657[/tex]grams/mol

[tex]55.1657[/tex] grams/mol of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)

Answer:

I'm assuming this is from a lab that you did - in which case, I can't really help you out here.

Explanation:

Answer:

3CaCi2 + 2Na3PO4 → Ca3(PO4)2 + 6NaCi

Explanation:

81.3 g H₃PO₃

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[RxN - Unbalanced] PCl₃ + H₂O → HCl + H₃PO₃

↓

[RxN - Balanced] PCl₃ + 3H₂O → 3HCl + H₃PO₃

[Given] 53.6 g H₂O

[Solve] x g H₃PO₃

Step 2: Identify Conversions

[RxN] 3 mol H₂O → 1 mol H₃PO₃

[PT] Molar Mass of H - 1.01 g/mol

[PT] Molar Mass of O - 16.00 g/mol

[PT] Molar Mass of P - 30.97 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

Molar Mass of H₃PO₃ - 3(1.01) + 30.97 + 3(16.00) = 82.00 g/mol

Step 3: Stoich

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

81.3023 g H₃PO₃ ≈ 81.3 g H₃PO₃

Answer:hey did you ever get an answer? I need it for this exam

Explanation:

Answer:

runoff

Explanation:

...............................

Answer:

a.Evaporated

Explanation:

because water thet falls from the clouds into the land could become evaporation and travel to the ocean

Answer:

29.5 days

Explanation:

its 29.5 days i hope it helps

Answer:

The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5 day

Answer:

B₃Si

Explanation:

Let's take  break it down. From triboron silicide;

Tri - Three

Triboron - Three boron atoms

Silicide - Silicon (with an -ide suffix)

The formular is given as;

B₃Si

D.Breathing

Oxygen obtained through respiration is used by cells in the cellular respiration process to obtain energy. Each animal has a different way of performing gas exchange, but we can say that it is through breathing that all animals move nutrients directly into the air through breathing

Answer:

A nanowire is a nanostructure, with the diameter of the order of a nanometre (10−9 meters). It can also be defined as the ratio of the length to width being greater than 1000. Alternatively, nanowires can be defined as structures that have a thickness or diameter constrained to tens of nanometers or less and an unconstrained length. At these scales, quantum mechanical effects are important—which coined the term "quantum wires". Many different types of nanowires exist, including superconducting (e.g. YBCO[1]), metallic (e.g. Ni, Pt, Au, Ag), semiconducting (e.g. silicon nanowires (SiNWs), InP, GaN) and insulating (e.g. SiO2, TiO2). Molecular nanowires are composed of repeating molecular units either organic (e.g. DNA) or inorganic (e.g. Mo6S9−xIx).

Explanation:

Hope it helps

Answer:

Reflection-energy waves bouncing off the surface of an object

Explanation:

Answer:

my answer I think is tetrahedral

Answer:

By adding acid to hydrogencarbonate you create a large concentration of CO2 in solution causing the solution to be highly supersaturated. This keeps the pH down as CO2 is in equilibrium with carbonic acid. During the day long mixing the excess CO2 strips off and as acid leaves the solution the pH increases.

Explanation:

Hope it helps

A solution with a pH of 8 will have its pH reduced with the addition of hydrochloric acid.

It is the degree of acidity or alkalinity of solutions.

pH ranges from 0 to 14 with 7 being a neutral pH. Any pH below 7 is acidic while above 7 is basic.

Thus, a pH of 8 is basic and the addition of hydrochloric acid will reduce it towards 7 or even below it.

More on pH can be found here: https://brainly.com/question/491373

#SPJ2

Answer:

1kg= 1000 grams hope it helps

Answer:

Light reflected off objects. Color has three main characteristics: hue (red, green, blue, etc.), value (how light or dark it is), and intensity (how bright or dull it is). Colors can be described as warm (red, yellow) or cool (blue, gray), depending on which end of the color spectrum they fall.

Christ Crowned / Honthorst

Christ Crowned with Thorns, Gerrit van Honthorst, about 1620

Value describes the brightness of color. Artists use color value to create different moods. Dark colors in a composition suggest a lack of light, as in a night or interior scene. Dark colors can often convey a sense of mystery or foreboding.

Light colors often describe a light source or light reflected within the composition. In this painting, the dark colors suggest a night or interior scene. The artist used light colors to describe the light created by the candle flame.

Annunciation / Bouts

The Annunciation, Dieric Bouts, 1450–1455

Intensity describes the purity or strength of a color. Bright colors are undiluted and are often associated with positive energy and heightened emotions. Dull colors have been diluted by mixing with other colors and create a sedate or serious mood. In this image the artist captured both the seriousness and the joy of the scene with the dull gray stone interior and the bright red drapery.

Explanation: