Freezing point
Where would you place this property in the Venn diagram?

Answer:

97.95 g/mol

Explanation:

Step 1: Define molar masses

Molar Mass of N - 14.01 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of Br - 79.90 g/mol

Step 2: Find amounts of molar masses

1 mol N - 14.01 g/mol

4 mol H - 4.04 g/mol

1 mol Br - 79.90 g/mol

Step 3: Find molar mass of compound

Molar Mass N + 4 Molar Mass H + 1 Molar Mass Br

14.01 g/mol + 4.04 g/mol + 79.90 g/mol

97.95 g/mol

Answer:

D)Polishing..

Answer:

Wouldn't it be rusting

Explanation:

Melting and bending are physical changes so is polishing. so rusting is the only choice, for metal to rust wouldn't it need a chemical change.

Answer:

hope it helps..

Explanation:

'Motile' (or moving) cilia are found in the lungs, respiratory tract and middle ear. ... These cilia have a rhythmic waving or beating motion. They work, for instance, to keep the airways clear of mucus and dirt, allowing us to breathe easily and without irritation.

Answer: to keep airway clear of mucus and dirt allowing us to breathe easy

Explanation:

Answer:

A=no

B= yes when liquid or solution

C=yes

D=no

E=yes

Explanation:

According to the given table, the placement of items A-E are

A) ⇒ No

B) ⇒Yes, when liquid or solution

C) ⇒Yes

D) ⇒No

E) ⇒Yes

What is conductivity and Malleability?

Malleability - Those metals that can be beaten into thin sheets with a hammer or any heavy object. For example - Cu, Au etc

Conductivity - Conductivity is the measure of the ease at which an electric charge or heat can pass through a material. For example - Metals are good conductors of heat and electrolytic solution is conductors of electricity.

Therefore, according to the given table, the placement of items A-E are

A) ⇒ No

B) ⇒Yes, when liquid or solution

C) ⇒Yes

D) ⇒No

E) ⇒Yes

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Answer:

Either D or C. I'm so sorry if I got you the wrong answer

Answer:

c

Explanation:

Answer:

The position of an equilibrium always shifts in such a direction as to relieve a stress applied to the system -Le Chåtelier's principle

A molecule that donates a proton when it encounters a proton acceptor.- Bronsted-Lowry acid

Occurs when a reaction involving an acid and its conjugate base is combined with a second reaction involving a base and its conjugate acid.- Neutralization

It ionizes completely when dissolved in water.- Strong acid

The shift in the position of equilibrium caused by the addition of a participating ion.- Common ion effect

It only partially ionizes when dissolved in water.- Weak electrolyte

It is capable of acting as either an acid or a base depending upon the solute- Amphoteric solvent

The act of self-ionization of a solvent to produce both a conjugate acid and a conjugate base.- Auto-protolysis

A chemical species that bears both positive and negative charges.- Zwitterion

Explanation:

In the answer box we have various chemical terminologies and their definitions. In answering the question, you must carefully read through each definition, then check what option best matches that definition from the options provided.

Each definition applies only to one terminology as you can see in the answer above.

Answer: 1.9 x 10^4

Explanation:

A dog has a mass of 19 kg. The mass of the dog in grams, expressed in scientific notation, is 1.95 × 10⁴ g.

Mass is the quantity of matter in a physical body. The product of the compound's molar mass and the substance's moles are defined as mass.

Measuring units to determine the size, weight, or quantity of any object. Seven fundamental measurement units are utilized in daily life and across the globe.

These units of measurement are the meter, which is used to measure distance, and the second, which is used to measure. Grams and kilograms are the measuring units that are used to measure the quantity of a solid item.

The mass of the dog in grams is:

1 kilogram = 1000 grams

19.5 kg × (10³ g/1 kg) = 1.95 × 10⁴ g.

Thus, the mass of the dog in grams is 1.95 × 10⁴ g.

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Answer:

c Molecule

Explanation:

cuz science

Answer:

B. Isotope 2

Explanation:

Isotopes can be defined as the atom of an element that has the same number of protons but different number of neutrons. This ultimately implies that, the isotopes of an element have the same atomic number (number of protons) but different atomic mass (number of nucleons).

Basically, the atomic mass of any chemical element found in the periodic table is equal to the weighted average of all its isotopes. Therefore, the isotope with the closest mass to the weighted average would be the most abundant.

In this scenario, a new element was discovered with an average atomic mass of 245.6 amu.

Hence, the isotope which is most likely to be the most abundant is isotope #2 that has a mass of 244.9 amu because it is closest in mass to the relative atomic mass (weighted average) of 245.6 amu.

Answer:

ERosion i think

Explanation:

Answer:  

Deposition

Explanation:

I hope you have a nice day(:

Answer:

b?

Explanation:

The answer is C: Radiant energy from the sun travels through the glass, is absorbed by the black pot, and reflected by the aluminum foil.

Answer:The Ordovician and Cambrian Periods are referred to as the "age of invertebrates", with trilobites abundant. In this period, brachiopods became more abundant that the trilobites, but all but one species of them are extinct today.

Explanation:

Answer:

8.7g/mL

Explanation:

I used the density formula to solve. d=m/v= 20g/2.3mL

Answer:

8.7 g/ml

Explanation:

the formula for density is D = M/V

Answer:

The answer is b oxygen gas b/c its an element

Explanation:

Answer:

First Question: in order to better explain what is happening during a phenomenon

Second Question: show beginning, middle and end if it fits the phenomenon; use zoom in bubbles to show the unobservable

Third Question: the type of material used to create the model

Explanation:

First Question: You would not revise a model to "cover up evidence," that's scientifically immoral and should not be done, and showing off to other scientists is not the point of revising something.

Second Question: You should use more than one color to differentiate different parts of the model, but don't overwhelm it with color. There should be some labels in the model, so some writing is necessary.

Third Question: Inaccurate color representation does not technically limit a model unless color scheme is important, so this could be an answer, but not likely. A messy model limits a model because it makes it hard to read. Approximating shapes is a limitation because it portrays an incorrect representation of what system the model is of. The type of material used to create the model is most likely the right answer.

Answer:

The answers are A. and D.

According to the concept of solubility and properties of ionic compounds, magnesium sulfate and sodium nitrate dissolve in water.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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Answer: C

Explanation: I looked it up lol

Answer:

Explanation:

The cryosphere—the portion of the Earth's surface where water is in solid form for at least one month of the year—has been shrinking in response to climate warming. ... The important outcome, however, is the change and the response the human social system (infrastructure, food, water, recreation) will have to that change.

The cryosphere the portion of the Earth's surface where water is in solid form for at least one month of the year has been shrinking in response to climate warming.

The cryosphere includes all of the earth's frozen water, including glaciers and sea ice.

The lithosphere is the solid part of the earth made up of rocks, minerals, and other elements except the ocean. It is the  part which present in the outer part of the earth which includes the brittle upper portion of the mantle and crust. The part of  planet where living things can be found from the upper part of the atmosphere to the lower of the oceans and pools that are thermal and made up of the parts of earth where life present in all ecosystem is known as biosphere.

The atmosphere is the thin layer of gases that covers the outer part of the planet. It gives us the many different climates, or broad way of  weather conditions around the world. The hydrosphere includes all of the water on earth from the oceans to glaciers and underground water and it can be liquid, vapour, or ice.

Therefore, the cryosphere the portion of the Earth's surface where water is in solid form for at least one month of the year has been shrinking in response to climate warming.

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Answer:

[tex]A=275.1g[/tex]

Explanation:

Hello.

In this case, since the radioactive decay is computed via:

[tex]A=A_0*2^{-\frac{t}{t_{1/2}}[/tex]

For the initial amount of Ra-226 (300 g), once 200 years have passed, the remaining mass is:

[tex]A=300g*2^{-\frac{200years}{1600years}}\\\\A=275.1g[/tex]

This is, considering that the half-life is 1600 years, it means that the mass of Ra-226 is decreased.

Best regards.

Answer:

The number of its protons and electrons are 82 each

Explanation:

Atomic no of an element = 82

Atomic no = No of protons

⇒ No of protons = 82

Electrons are negatively charged particle and Protons are positively charged particles.

No of electrons = 82

Hence, the element is Lead with 82 protons and electrons

Answer:

320 kg  of iron(III) oxide contain 4007.76 moles of iron atom.

Explanation:

Given data:

Mass of iron(III) oxide = 320 kg (320000 g)

Number of moles of iron atoms = ?

Solution:

First of all we will calculate the number of moles of iron(III) oxide.

Number of moles = mass/molar mass

Number of moles = 320000 g/ 159.69 g/mol

Number of moles = 2003.88 mol

1 mole of Fe₂O₃ contain 2 moles of iron atom.

2003.88 moles of  Fe₂O₃ contain,

2003.88 ×2 = 4007.76 moles of iron atom.

Answer:

1-methoxypropane

Explanation:

Answer:On the Right End

Explanation: Trust me I just got it wrong on APEX to answer it for y’all On the right end is the correct answer

Answer:

Right end

Explanation:

Just did the quiz

Answer: iron ore is heter

quartz homo

granite heter

energy drink homo

oil-and vingar salad dressing heter

salt homo

rainwater homo

nitrogen homo

ice melting chemical

burning paper chemical change

Answer: True

Explanation:

Answer:

1551.45 MmHg

hope this helps :D