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Answer:

Relative and average atomic mass both describe properties of an element related to its different isotopes.

Explanation:However, relative atomic mass is a standardized number that's assumed to be correct under most circumstances, while average atomic mass is only true for a specific sample.

Relative and average atomic mass both describe properties of an element related to its different isotopes. Out of these two Relative atomic mas is more accurate.

Mass defines the quantity of a substance. It is measured in gram or kilogram.  Average mass is the mass of atoms of an element that are isotopes.  It can be calculated by multiplying mass of a isotope to natural abundance of that isotope.

The relative mass is the mass that is with respect to mass of a matter that is considered as standard. In chemistry relative mass is equal to the mass of one-twelfth the mass of [tex]C-12[/tex] isotope .

Out of relative and average atomic mass, relative atomic mass is more accurate as it is calculated with respect to a standard quantity.

Thus Relative atomic mass is more accurate than average atomic mass.

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Relative and average atomic mass both describe properties of an element related to its different isotopes.

Explanation: However, relative atomic mass is a standardized number that's assumed to be correct under most circumstances, while average atomic mass is only true for a specific sample.

Answer:

DNA is made up of two strands of nucleotides. The nucleotides are made up of a sugar (deoxyribose in DNA), a phosphate, and a nitrogen base. The sugars and phosphates make up the "handrails" (or "backbone"), and are held together by covalent bonds.

Explanation:

The size of volumetric flask that would be useful in diluting 100 ml of a 3.0 M solution of sucrose to make a 0.60M solution is 500mL.

The volume of a solution can be calculated by using the following expression;

C1V1 = C2V2

Where;

3 × 100 = V2 × 0.60

300 = 0.6V2

V2 = 300 ÷ 0.6

V2 = 500mL

Therefore, the size of volumetric flask that would be useful in diluting 100 ml of a 3.0 M solution of sucrose to make a 0.60M solution is 500mL.

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Answer:

D = 5.3 g/mL

Explanation:

Density = Mass over Volume

D = m/V

Step 1: Define

D = unknown

m = 16 g

v = 3.0 mL

Step 2: Substitute and Evaluate

D = 16 g / 3.0 mL

D = 5.333333333 g/mL

Step 3: Simplify

We have 2 sig figs.

5.333333333 g/mL ≈ 5.3 g/mL

Answer:

true

Explanation:

what is substance take change everything changes

Answer:

The volume of basketball is  7216.5 cm³.

Explanation:

Given data:

Radius of ball = 12 cm

Volume of ball = ?

Solution:

We will apply the volume formula of sphere.

V = 4/3 ×π×r³

we know that,

π = 22/7

r = 12 cm

Now we will put the values in formula.

V = 4/3 × 3.14 × (12 cm)³

V =  4/3 × 3.14 ×1728 cm³

V = 7216.5  cm³

Thus, the volume of basketball is  7216.5  cm³.

Answer:

B)  kilometer.

Explanation:

Took the test

Answer:

do good

Explanation:

do good

Absorbing light and through collisions

Answer:

If a spacecraft was parked on Venus and needed to make a flight to Jupiter, it would need to travel 670,338,270 km.

Explanation:

Jupiter - Various Properties

Jupiter Meaning:

Jupiter is the largest planet in the solar system. Fittingly, it was named after the king of the gods in Roman mythology. In a similar manner, the ancient Greeks named the planet after Zeus, the king of the Greek pantheon.

Venus - Various Properties

Venus Meaning:

Venus (plural veneres) is the Latin word for ‘loveliness,’ ‘beauty,’ ‘charm,’ It is derived from Proto-Italic *wenos- ('desire'). The ultimate source is the Proto-Indo-European (PIE) *wenh₁-os ('desire').

To calculate how far the spacecraft would need to fly is to calculate the distance betwen Venus and Jupiter.

To save energy, let's consider a Hohmann transfer orbit, an ellipse tangent to opposite sides of Venus's and Jupiter's orbits. The spacecraft would follow the outbound half of this orbit, departing ahead of Venus and arriving as Jupiter overtakes it.

Depending on where in Jupiter's orbit the spacecraft meets it, this orbit has semi-major axis a = (rV + rJ) / 2 = 2.96±0.03 au and period of a3/2 = 5.10±0.08 years. The outbound half has a path length of 7.78±0.07 au and takes 2.55±0.04 years. As Jupiter moves 72° to 84° around the Sun in that time, the launch window is when Venus's heliocentric ecliptic longitude is 96° to 108° behind Jupiter's.

To convert au to km, multiply by 1.496 × 108 km / au.

If a spacecraft was parked on Venus and needed to make a flight to Jupiter, it would need to travel 670,338,270 km.

Answer:

If a spacecraft was parked on Venus and needed to make a flight to Jupiter, it would need to travel 670,338,270 km.

Explanation:

Answer:

Explanation:not

Answer:

[tex]\huge\boxed{\sf 1.51\ L}[/tex]

Explanation:

From the reaction:

2 moles of Na produce 1 mole of H₂

Converting 3.10 g of Na into moles:

Moles = mass / molar mass

= 3.10 / 23

= 0.135 mol

From the reaction:

2 Na = 1 H₂

1 Na = 1/2 H₂

1 Na = 0.5 H₂

1 mol of Na = 0.5 mol of H₂

0.135 mol of Na = 0.5 × 0.135 mol of H₂

0.135 mol of Na = 0.067 mol of H₂

So, 0.135 mol of Na (3.10 g) produce 0.067 mol of H₂

Convert 0.067 mol of H₂ into L:

= mol × molar value

[molar value = 22.4 L/mol]

= 0.067 × 22.4

= 1.51 L

[tex]\rule[225]{225}{2}[/tex]

Answer:

The answer is species diversity

Explanation:

Hope this helps:)......if not then sorry for wasting your time and may God bless you:)

Answer:

A simple way of detecting the smell of the ester is to pour the mixture into some water in a small beaker. Esters are virtually insoluble in water and tend to form a thin layer on the surface. Excess acid and alcohol both dissolve and are tucked safely away under the ester laye

Answer:

see answer below

Explanation:

LOL idk what this question is about but to my understanding, having a detailed procedure gives u more clue on what u r doing and how u r doing it. think of this like a instruction manual, if u want to build a telescope and have no idea how to build it and the instrutions only give u short sentences like"screw nails next to the finger scope" or something like that wouldnt help much. i dont know about u but i rather prefer instructions written like this"first screw the nail beside the finger scope, DO NOT unscrew the botton" and continue. i cant build a telescope so yea dont know any directions to that.

Explanation:

manganese(11)

chloride =color pink

tetrahydate

copper(11)

chloride =color blue green

dihydrate

nickel(11)

chloride =color green

hexahydrate

Answer:

Explanation:

Iron(II) sulphate crystals are green.

Solid Ferric, ( Fe(III) chloride is brown.

Copper Sulphate is blue.

Calcium Sulphate is white.

Barium Sulphate is white.

If 45.0 grams of magnesium hydroxide is heated, the amount of water that will be produced would be 13.90 grams

From the equation of the reaction:

Mg(OH)₂  →  MgO + H₂O

The mole ratio of Mg(OH)₂ to H₂O is 1:1

Mole of 45 grams Mg(OH)₂ = 45/58.33 = 0.77 moles

Thus, the equivalent mole of H₂O produced would also be 0.77 moles.

Mass of 0.77 moles H₂O = 0.77 x 18.02 = 13.90 grams

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Answer:

1= simple distillation

2 - elements contain just one type of atom ; compounds contain atoms of at least two different elements , which have been chemically combined or bonded

Explanation:

hope this helps

Answer:

chromotragraphy

because it has mixture of compounds and elements

i think these are the answers

Explanation:

pH of solution A is 12.5 and it is the most basic (alkaline) among all.

Those solution which are having value more than 7 in the pH scale shows the basic character and relation between pH & pOH will be represented as:

pH + pOH = 14

Now we calculate the pH for given solutions:

For solution A, pOH = 1.5

pH = 14 - 1.5 = 12.5

For solution B, pOH = 7

pH = 14 - 7 = 7

For solution C, pOH = 13.5

pH = 14 - 13.5 = 0.5

Value of pH for solution A is highest and shows basic nature, solution B is neutral and solution C is acidic in nature.

Hence, solution A is most basic.

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Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\[/tex]

From the question

mass = 31 g

density = 444 g/mL

We have

[tex]volume = \frac{31}{444} \\ = 0.06981...[/tex]

We have the final answer as

Hope this helps you

Answer:

A balanced equation is a chemical equation where there are equal numbers of atoms of each element on both sides of the equation.

A chemical equation that has a equal amount of each

each element on the left and right sides

Answer:

led

Explanation:

Paint is kind of synthetic chemical product.

Paint is any colored liquid, liquefiable, or solid mastic substance that solidifies after being applied in a thin layer to a substrate.

Pigments, binders, solvents, and additives are the four major components of all paints. Binders work to "bind" the pigments together and create the paint film, while pigments offer color and conceal. Additives are substances that give certain paint features such as mildew resistance, while solvents are liquids that suspend the components and allow you to deposit the paint on the surfaces. All four elements work together to create paint that is tailored to your exact design requirements.

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Answer:

What could happen if the nervous system and the endocrine system stopped communicating is that body regulation functions would be lost, constituting the loss of organic balance or homeostasis.

Explanation:

There is a close relationship between the nervous and endocrine systems, or what is also known as the neuroendocrine system.

The nervous system is in charge of the regulation of all the vital functions, receiving external information, processing it and elaborating an adequate response. When it comes to the internal functions of the organism, the endocrine system receives orders from the nervous system to regulate them and maintain homeostasis.

If the communication between Nervous system and the endocrine system did not exist, there would be no way to regulate many functions and the organism would lose its ability to maintain internal balance.

An example of this would be the function of vasopressin or antidiuretic hormone (ADH). This hormone is produced by the hypothalamus and released by the neurohypophysis, being its main function the regulation of the hydroelectrolytic balance. If the communication between both systems did not exist, the function of ADH would not be possible, and the hydroelectrolytic balance would be lost.

If there is no communication between Nervous system and the endocrine system, there would be no way to regulate many functions and the organism would lose its ability to maintain internal balance.

⇒For example:

The activity and role of the adrenal glands in response to stress provide an excellent example of interdependency of the nervous and endocrine systems and if there is no communication between the two systems thus there will be no activity of adrenal glands.

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Answer:

Tidal power surrounds gravitational hydropower, which uses the movement of water to push a turbine to generate electricity.

Explanation:

:)

Answer:

hydropower that works by harnessing the kinetic energy created by the rise and falls of the tides.

Explanation:

I already gave you the answer this morning but here's the answer again

Answer:

pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.

Answer:

1. The vernal equinox

- happens around March 21st

- has days and nights of equal length

2. In the southern hemisphere, the longest day happens during

- June

3. During the winter in the northern hemisphere

- the days are shorter than during summer

Answer:

1)the vernal equinox happens around March 21st

2)in the southern hemisphere the longest day of the year happens during december

3)The days are shorter then during the summer.

Explanation:

Answer:

for the force that sent the person forward, there is an equal force pushing back on the skateboard

For 12.09 kcal of energy, added to 45 grams of water at an initial temperature of 23.4°C, the final temperature of the water is mathematically given as

T2=290C

Generally, the equation for the Energy  is mathematically given as

Q=mcdT

Therefore

Q=mcdT

12.09=45*(23.4-T2)

T2=290C

In conclusion,  the final temperature is

T2=290C

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Explanation:

As the temperature increases, the average kinetic energy increases as does the velocity of the gas particles hitting the walls of the container. The force exerted by the particles per unit of area on the container is the pressure, so as the temperature increases the pressure must also increase.

For example, if an engineer has to store 600g of oxygen in a container and that oxygen needs to be kept at a pressure of 1 atm and a temperature of 125 degrees Fahrenheit, then this theorem (which is called Ideal Gas Law) is used to figure out what volume of a container needs to be built.