What does this demonstration show?

Answers

Answer 1
There is nothing there....

Related Questions

blance: Mg + HNO2 → Mg(NO2)2 + H2

Answers

Explanation:

Mg + 2HNO2 → Mg(NO2)2 + H2

Answer:

Mg + 2HNO2 → Mg(NO2)2 + H2

Explanation:

Each family in the periodic table has its own characteristic properties based upon its number of valence electrons.

True or False

Answers

The correct answer is True

PLZ GIVE ME ANSWERS WITH WORK I WILL GIvE YOU A BRain LIST PLZZZZZ

49. Carbon-14 has a half-life of 5,730 years. If a sample contained 80 mg originally, how much
is left after 17,190 years?

50. The half-life of cobalt-60 is 5.26 years. If 100 grams are left after 15.78 years, how many
grams were in the original sample?

Answers

Answer:

i only found the 49, hope it still helps, mate

49. In this question (t½) of C-14 is 5730 years, which means that after 5730 years half of the sample would have decayed and half would be left as it is.

After 5730 years ( first half life) 70 /2 = 35 mg decays and 35 g remains left.

After another 5730 years ( two half lives or 11460 years) 35 /2 = 17.5mg decays and 17.5 g remains left .

After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left.

after three half lives or 17190 years, 8.75 g of C-14 will be left.

WILL GIVE BRAINLIEST AND 20 POINTS How many grams are in 2.36 L of neon gas

Answers

Answer:

2.088464 grams.

Explanation:

The density of neon is 0.9002 g/L. Multiplying this value by the number of liters gives how many grams of neon it contains.

0.9002(2.32) = 2.088464

i miss flirting at school, can anyone help ;)

Answers

Answer:

Don't worry school's will re-open in August 2021. ._.

Explanation:

i think everyone does. so i'll help you

The process plants use to make sugar for food

Answers

Answer:

PHOTOSYNTHESIS!

Explanation:

Which of the following dilutions would produce 2.0M acid from 3.0M acid

A) 3.0mL acid and 2.0mL water

B) 2.0mL acid and 1.0mL water

C) 2.0mL acid and 3.0mL water

D) 1.0mL acid and 2.0mL water

Answers

Answer:

that's a little bit difficult question

Explanation:

sorry !

When iron (iii) oxide, Fe2O3, and aluminum are heated together at a high temperature, iron (Fe) and aluminum oxide (Al2O3) is formed
1.What is the meaning of the symbol (iii) in iron (iii) oxide?

2.Write a balanced equation for this reaction

Answers

The three percenters, also styled 3 percenters, 3%ers and III%ers are American and Canadian far-right anti-government.

Which nitrogen base sequence is the partner of C-A-T-C-G-A?

Answers

Answer:

G-T-A-G-C-T

this is the answer

G T A G C T is correct. An analogy I used to rmbr this more clearly and off by heart was “The apples (A) in the trees (T) and the cows (C) in the garage (G)”.

Consider the following reaction:
A + B C + D + heat

If this reaction is first allowed to reach equilibrium, the concentration of substance D will be further increased by then (choose one best answer)

(A) removing some A.
(B) removing some B.
(C) removing some C.
(D) heating the reaction
(E) none of the above

Answers

Do you know why I think c it’s because b and c are combined so removing part of c is ok

Which of the three phases of matter solid liquid or gas has particles that are fast moving and independent of each other??? Also this is science class work

Answers

The answer is particles

The Answer is Solid

Explanation:

the particles in a solid are vibrating very fast and are packed together so they're independent one each other.

How does climate change
relate to energy?

Answers

Also since climate change is caused by green house gasses and the sun a lot people have been using solar energy, which is a cleaner type of energy captured from the sun.

Which of the following is an example of mutualism?​

Answers

Answer:The relationship which is between bacteria and ungulates with the intestine is or good example of mutualism. Mutualism plays an important role in ecology. We can say that if we measure the exact fitness what we get as a benefit is a mutualistic relationship.example of a mutualistic relationship is that of the oxpecker (a kind of bird) and the rhinoceros or zebra. Oxpeckers land on rhinos or zebras and eat ticks and other parasites that live on their skin. The oxpeckers get food and the beasts get pest control.

Explanation:

hope this helps have a nice night❤️❤️❤️❤️

Explanation:

a human uses dog to protect a flock of sheep

What is an analyte in chemistry?

Answers

Answer:

A substance being analyzed by (for example) mass spectrometry, infrared spectroscopy, NMR spectroscopy, or chromatography. In NMR spectroscopy, the analyte is often a solution in a deuterated solvent such deuterochloroform

Explanation:

Answer An analyte', component (in clinical chemistry), or chemical species is a substance or chemical constituent that is of interest in an analytical procedure. The purest substances are referred to as analytes. Example : 24 karat gold, NaCl, water, etc.

: A substance being analyzed by (for example) mass spectrometry, infrared spectroscopy, NMR spectroscopy, or chromatography. In NMR spectroscopy, the analyte is often a solution in a deuterated solvent such deuterochloroform (CDCl3; chloroform-D) or deuterated water (heavy water; D2O). hope this helps have a bless night❤️❤️❤️

Explanation:

how many miles will a person run an 800 km race?

Answers

Answer:

uhh its 497 miles

Explanation:

how does a drupe fruit differ from a hesperidum fruit. ​

Answers

Answer:

hi

Explanation:

Answer:

Fleshy Fruits: All of most of the ovary wall (pericarp) is soft or fleshy at maturity. ... partitions, juicy seed vesicles, and a leathery exocarp similar to a hesperidium. ... This is a very common dry fruit found in many different plant families.

Explanation:

BRAINLIEST ANSWER!!!Nitrogen has three occurring Isotopes: Nitrogen-13, Nitrogen-14, Nitrogen-15. Which isotope
is the most abundant?
Please also explain why:D

Answers

Answer:

N-14 is more abundant in nature because it is closest to the average atomic mass of 14.007. The average atomic mass is a weighted average which takes into account not only the mass but the abundance of a particular isotope.

Explanation:

hope this helped:)

how many mililiters is 0.55 L

Answers

Answer:

It's 550 milliliters.

Explanation:

I hope this helps.

Show how the limiting reactant is determined for 3.80 g of magnesium reacting with 12.5 g of oxygen.

Answers

Answer:

Magnesium is the limiting reactant.

Explanation:

The balanced reaction is:

2 Mg + O₂ ⇒ 2 MgO

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following quantities participate in the reaction:

Mg: 2 molesO₂: 1 moleMgO: 2 moles

Being the molar mass:

Mg: 24.31 g/moleO₂: 32 g/moleMgO: 40.31 g/mole

Then the following quantities of mass participate in the reaction:

Mg: 2 moles* 24.31 g/mole= 48.62 gO₂: 1 mole* 32 g/mole= 32 gMgO: 2 moles* 40.31 g/mole= 80.62 g

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use the reaction stoichiometry of the reaction. You can use a simple rule of three as follows: If by stoichiometry of the reaction 32 grams of oxygen react with 48.62 grams of magnesium, 12.5 g of oxygen will act with how much mass of magnesium?

[tex]mass of magnesium=\frac{12.5 g of oxygen*48.62 grams of magnesium}{32 grams of oxygen}[/tex]

mass of magnesium= 18.99 grams

But 18.99 grams of magnesium are not available, 3.80 molesgrams are available. Since you have less mass than you need to react with 12.5 grams of oxygen, magnesium will be the limiting reagent.

Energy of vibrating particles is....
electrical energy

thermal energy

sound energy

mechanical energy

Answers

your answer would be sound energy

Explanation:

my brain

What is unique about the metal mercury?

Answers

Mercury is the only metal that is a liquid at standard temperature and pressure.
—Mercury has a unique electron configuration which strongly resists removal of an electron, making it behave similarly to noble gas elements.
—As a result, mercury forms weak bonds and is a liquid at room temperature.
—Mercury dissolves to form amalgams with gold, zinc, and many other metals.

A car accelerates from 20 m/s to 40 m/s in 4 seconds. What is the car’s acceleration?

Answers

Answer:

40 - 20 = 20

20/4 = 5m/s

The difference in velocity divided by the rate = acceleration.

I don't understand this problem
?Mg+?N2=?Mg3N2​

Answers

Answer:

Magnesium nitride, which possesses the chemical formula Mg3N2, is an inorganic compound of magnesium and nitrogen. Moles H2O = 75.0 grams / 18.02 g/mol. This reaction is used to prove that air contains nitrogen gas. Which equation would have the same coefficients in the same order as 2CO2 + 3H20 → C2H6O + 3O2?

Explanation:

Hopefully this helps :)

Brainiest please I need 5 more

Answer:

yeah im only answering so she can get brainliest

Explanation:

How is space like a vacuum?​

Answers

The vacuum of outer space is not caused by the expansion of the universe, but is caused by gravity. ... There would still be things like vacuum fluctuations, gravity, and dark matter, which can't be sucked out. With that said, outer space is very close to empty compared to earth's atmosphere.

what is the density of a small block of wood with a mass of 35g and a volume of 70 cm3

Help plz

Answers

Answer:

The density of the wood is 0.5 g/cm³

Explanation:

To calculate density you need to use the formula D = M/V

D = Density

M = Mass (in grams)

V = Volume (in cm³ for solids and mL for liquids)

So, just plug in your given values: D = 35 g ÷ 70 cm³ = 0.5 g/cm³

Voila, you just calculated the density of that piece of wood!

A mixture of metals with properties different than the metals by themselves is called a(n) __________.

Answers

Answer:

Alloy

Explanation:

The charge of the atom is _______ because there are ______ numbers of and______ in an atom.

Answers

Answer:

see below

Explanation:

the charge of the atom is neutral because there are equal numbers of protons and electrons in an atom.

hope this helps

please mark

1) how can you make a solution more concentrated

Answers

Explanation:

solvent bc when you remove it it becomes more concentrate

What 3 things drive the pressure of a gas up

Answers

Answer:

Density of the Gas

Explanation:

More molecules mean more hits against the container walls. Increasing the number of particles means you have increased the density of the gas. This third factor is part of the ideal gas law, which explains how these three factors -- temperature, volume and density -- interact with each other.

Are two clear liquids mix to create a “chunky” solid a chemical of physical change? Why?

Answers

Answer:

Well i know that a chemical change is somthing that can not be undone.

This however is a physical change let me explain.

Even though you mixed two chemicals together to create a new substance does NOT mean it is a chemical change. This however is kinda like a water. You can turn water into a ice cube that does not mean it changed what the water is made out of it just changed the form of the water. Kinda like this. A chemical change would be an example of buring a log once that log has turned into ashs it will never be the log it was before.

Explanation:

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