Please i need help with this question.
Please show workings where necessary and proof/ explain your point​

Answer:

27.0833 feet

Explanation:

Answer:

Time and Distance

Explanation:

The equation needed to calculate speed is distance ÷ time.

Answer:

Explanation:

To convert the mass to moles, divide the mass by the atomic weight of the element or compound.

To convert back to mass from the moles, multiply the moles by the atomic weight of the element or compound

Answer:

Explanation:

Many common everyday services such as weather forecasting, remote sensing, satellite navigation systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. ... Of the sciences, astronomy and Earth science benefit from space technology am in 6th grade btw

Answer: 322.56 Kelvin

Explanation:

Use the Ideal Gas Law

[tex]PV=nRT[/tex]

R is the gas constant

T is the temperature in Kelvins

P is the pressure in atmospheres

V is the volume in liters

n is the number of moles of gas

First, the mm of mercury need to be converted to atmospheres using the conversion factor 1atm = 760 torr.

[tex]751.2mmHg (torr) =0.988atm[/tex]

Now plug everything in

[tex](0.988)(26)=(0.97)(0.0821)T\\T=322.56K[/tex]

Answer: the overuse of resources will lead to a decline of the resources, the question was a little non specific so this was the best I could do :)

Explanation:

Answer:

a new substance

Explanation:

because it is chemival

Answer:

It's compound? It's chemical compound would be represented my letters or numbers

Answer:

The letters in a chemical formula are the symbols for the specific elements. So for example, H means hydrogen, O means oxygen, S means sul fur, C u means copper, F means fluorine, Fe means iron and Au means gold.

Explanation:

Yea, Hope I helped

Brainly appreciated

Answer:

D po ayan po ang sagot ko salamat po

Explanation:

Hello mr/mrs (name) I unfortunately couldn't pay attention to the class due to some issues I had therefore I don't know what we are doing in class

OR

Hello mr/mrs (name) I could understand what we were doing in class I would like it if you could break it down more or explain better to me

OR just say something it had something to do with your internet such as

Hello mr/mrs (name) I didn't understand what you were saying during our class due to some of my internet issues I was have throughout the day. I hope you can explain what we did during the class.

Those may be some of my excuses I've used before

they have worked for me:)

I don't know if that helped?:/

Answer: IT IS D

Explanation:

Answer:

3.82 × 10 ^-23 g

Explanation:

6.02 x 10^23atoms = 1 mole of sodium

1 atom = 1/(6.02 x 10^23) mole

mass = mole × molar mass

= 1/(6.02 x 10^23) × 23

= 3.82 × 10 ^-23 g

Answer:

Arterioles

Explanation:

Arterioles

The chemical formula of CO, Fe₂O₃, and C₂H₄ contain atoms of two different elements. Therefore, option (D) is correct.

A chemical formula provides information about the chemical proportions of atoms of each element that are present in a molecule or chemical compound. The chemical formula can be represented by using chemical symbols of elements, numbers (subscripts), and other symbols, such as commas, dashes, brackets, and plus (+) and minus (−) signs.

A chemical formula of a compound has no words but can be written in certain simple chemical structures. Chemical formulae can be more limited in power than chemical names and structural formulae. There are two kinds of chemical formulas in which one empirical formula and another molecular formula.

In the chemical formula of carbon monoxide (CO) has carbon and oxygen two different elements. In the chemical formula of iron oxide (Fe₂O₃)  iron and oxygen are two different elements. In the chemical formula of ethane (C₂H₄ ) has carbon and hydrogen two different elements.

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Answer:

210.657J

Explanation:

joules of heat energy needed= 23×0.129×(93-22)

=210.657J

Answer:

The hydroxide ion concentration in an aqueous solution, [OH-], in mol L-1, can be calculated if the pOH of the solution is known.

pOH is defined as the negative logarithm (to base 10) of the hydroxide ion concentration in mol L-1 pOH = -log10[OH-]

Explanation:

(C.NaCl

it is the correct answer because this compound likes colder weather.

Answer: The distribution of natural resources depends upon many physical factors like land, climate and altitude. The distribution of resources is unequal because these factors differ from place to place on this earth.

Many physical factors, such as land, climate, and altitude, influence the distribution of natural resources. Because these factors differ from place to place on this planet, the distribution of resources is unequal.

The Earth's surface is defined as the part of the water or land that comes into contact with the air above it. The surface is the part of the Earth with which we interact. The crust is the rock layer that surrounds the Earth's mantle. The crust encircles the entire planet, including the ocean floor.

The crust is the planet's surface, where we live; it's actually a very thin layer, only 70 kilometers thick at its thickest point.

Petroleum is formed by the same geological process that creates sedimentary rock. The geological processes that create rocks and natural resources such as granite and copper do not occur everywhere on Earth and take a long time to form. This explains why granite and copper aren't found everywhere on the planet.

Thus, Because these factors differ from place to place on this planet, the distribution of resources is unequal.

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Answer:

the  valance electrons

Explanation:

Answer:

2.00

Explanation:

From Graham's law; the rate of effusion is inversely proportional to the square root of the relative molecular mass.

Let the rate of effusion of Helium be R1

Let the rate of effusion of Methane be R2

Let the molecular mass of Helium be M1

Let the molecular mass of Methane be M2

Hence;

R1/R2 = √M2/M1

R1/R2 = √16.0294/4.0026

R1/R2 = 2.00

Answer:

It is a synonym for "life form". Organisms are classified by taxonomy into groups such as multicellular animals, plants, and fungi; or unicellular microorganisms such as protists, bacteria, and archaea. ... Fungi, animals and plants are examples of kingdoms of organisms within the eukaryotes.

So yes, it should

Explanation:

Answer:

Temperature is a measure of the kinetic energy of particles in a substance. As temperature increases, the atoms or molecules in a substance gain energy.

Explanation:

An element that is commonly found in household materials, malleable, and a good conductor of heat and electricity. They say it is not very reactive and is very similar to the other elements in its group as an alkali metal.

All the elements listed in column 1A of the periodic table—hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium—are classified as alkali metals. The fact that all of these metals contain one electron in their outermost layer of electrons binds them together.

The production of paper, detergents, and soap all need sodium hydroxide. In addition to being used as the electrolyte in alkaline, Ni-Cd, and Ni-MH batteries, potassium hydroxide is also used by farmers to make acidic soil more alkaline so that plants would grow better in it.

Vinegar, hydrochloric acid, and sulfuric acid are a few examples of the H = ion-containing compounds referred to as acids. Alkalis are a class of substances that feel soapy and contain the OH = ion.

Thus, option D is correct.

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