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2 years ago

What is the difference between weight and mass?

Chemistry

2 answers:

Rashid [163]2 years ago

4 0

Answer: it's easy just think about it:

Explanation:

weight: the weight of an object is the force acting on the object due to gravity.

mass: Mass is the amount of matter or substance that makes up an object.

in total: The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it.

Happy to help!

Feel free to ask any questions!

Harrizon [31]2 years ago

4 0

answer: mass is the amount of matter in a material(m)

and weight is a measure of how the force of gravity acts upon that mass(m*g)

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Describe the limitations of using models to represent atoms

morpeh [17]

Usually, a model is a depiction of a certain entity, never the real thing. In times

past, many, many models look great on paper but are way off!

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3 years ago

Consider the following reversible reaction.

Marina86 [1]

Answer:

B is the correct option

Explanation:

K= the ratio of product of concentration of products to the product of concentration of reactants raised to power equal to their cofficients.

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3 years ago

Read 2 more answers

A biochemist carefully measures the molarity of magnesium ion in 47, mL of cell growth medium to be 97. ??. Unfortunately, a car

serg [7]

Complete Question

The complete question is shown on the first uploaded image

Answer:

Answer: 760 uM

Explanation:

the addition of solvent to a solution in a such away that the volume of the solution increases and the concentration decreases is a process know as dilution

The concentration and the volume of the dilute and concentrated solution are given below as follows

$C_{1}V_{1}$ $= C_{f}V_{f}$

Concentrated solution Dilute solution

Given that M1 = 97.0uM

V1 = 47.0 mL

V2 = 6.0 mL

M2 = ?

Therefore M1V1 = M2V2

M2 = M1V1/V2

M2 = (97*47)/6

M2 = 760 uM

Answer: 760 uM

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3 years ago

Differentiate between speed and velocity

Leokris [45]

Explanation:

Speed and velocity are both used to describe the motion of a body. But there are differences between the two terms.

Velocity is the rate of change of displacement with time. It is mathematically expressed below:

Velocity = $\frac{displacement}{time taken}$

The unit of velocity is m/s or km/hr.

Velocity is a vector quantity that shows magnitude and direction.

Speed is the rate of change of distance with time. It is concerned with the total length of path a body moves.

Speed = $\frac{Distance }{time taken}$

It has the same unit as velocity

It is a scalar quantity that has only magnitude.

learn more:

Velocity brainly.com/question/10883914

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3 years ago

How many moles of Cu are in 1.48 × 1025 Cu atoms?

Novosadov [1.4K]

<h3>Answer:</h3>

24.6 mol Cu

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Moles
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 1.48 × 10²⁵ atoms Cu

[Solve] moles Cu

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

[DA] Set up: $\displaystyle 1.48 \cdot 10^{25} \ atoms \ Cu(\frac{1 \ mol \ Cu}{6.022 \cdot 10^{23} \ atoms \ Cu})$
[DA] Divide [Cancel out units]: $\displaystyle 24.5766 \ mol \ Cu$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

24.5766 mol Cu ≈ 24.6 mol Cu

4 0

3 years ago