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4 years ago

What is force and motion

Chemistry

2 answers:

Oksana_A [137]4 years ago

6 0

Answer:

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes beginning moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull.

= google

lol

Elza [17]4 years ago

5 0

Force is a strength or energy as an attribute or physical action or movement, motion is the action or process of moving or being moved

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Which process takes place in both plant and animal cells?

matrenka [14]

The answer is Cellular respiration because it occurs in the cytoplasm of both plants and animals.

4 0

3 years ago

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What is an operational and Conceptual definition of an element ?

zimovet [89]

A conceptual definition tells you what the concept means, what your constructs are by explaining how they are related to other constructs, while an operational definition only tells you how to measure it.

5 0

3 years ago

A 1.78−L sample of hydrogen chloride (HCl) gas at 2.09 atm and 22°C is completely dissolved in 699 mL of water to form hydrochlo

patriot [66]

Answer:

$M=0.960M$

Explanation:

Hello,

In this case, it is firstly necessary to compute the dissolved moles of hydrogen chloride into the water as shown below:

$n_{HCl}=\frac{PV}{RT}=\frac{2.09atm*1.78L}{0.082\frac{atm*L}{mol*K}*295.15K}=0.671molHCl$

Thus, the molarity is computed as shown below:

$M=\frac{0.671mol}{0.699L}=0.960M$

Wherein no change in volume is considered, therefore the volume of the solution was the same volume of water.

Best regards.

5 0

3 years ago

For a snack, I ate 40 gummy bears. Each gummy bear weighs 3g.

slega [8]

Taking into account the rule of three, you eat 480 kcal.

<h3>Rule of three</h3>

The rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.

If the relationship between the magnitudes is direct, the direct rule of three must be applied as follow, being a, b and c known data and x the variable to be calculated:

a ⇒ b

c ⇒ x

So: x= (c×b)÷ a

<h3>kcal of eaten gummy bears</h3>

To know the mass of eaten gummy bears, the following rule of three applies: if 1 gummy bear weighs 3 g, 40 gummy bears weigh how much mass?

1 gummy bear ⇒ 3 g

40 gummy bears ⇒ x

So: x= (40 gummy bears× 3 g)÷ 1 gummy bear

Solving:

If gummy bears are 100% carbohydrates and carbohydrates are 4 kcal/g, the following rule of three applies: If 1 g has 4 kcal, 120 g has how many kcal?

1 g ⇒ 4 kcal

120 g⇒ x

So: x= (120 g× 4 kcal)÷ 1 g

Solving:

In summary, you eat 480 kcal.

Learn more with this example:

brainly.com/question/12482948

#SPJ1

4 0

2 years ago

Acrylonitrile is an important building block for synthetic fibers and plastics. Over 2 billion pounds of acrylonitrile are produ

serg [7]

Answer:

There can be prepared 693.512 kg of acrylonitrile

Explanation:

Propene has molar mass of 42.08g/mole

ammonia has molar mass of 17.03g/ mole

O2 has molar mass of 2*16 = 32g/mole

acrylonitrile has molar mass of 53.06g /mole

<u>Step 1</u>: finding limiting reagent

2C3H6 + 2NH3 + 3O2 → 2C3H3N + 6H2O

We see that the ratio 2:2:3:2:6 is

This means that for 2 mole C3H6 we have 2 mole 2NH3 and 3 mole 3O2, also there will be produced 2 mole C3H3N and 6 mole H2O

<u>Step2</u> : Calculating moles

moles propene: 550000g / 42.08g/mole = 13070.34 moles

moles ammonia: 650000g/ 17.03g/mole = 38167.94 moles

moles O2: 900000g/ 32g/mole = 28125moles

The limiting reagent is propene:

⇒propene will be consumed completely

⇒ammonia will consume 13070.34 moles ⇒ there will remain 25097.6 moles

⇒oxygen will consume (2/3 * 13070.34) = 18750moles ⇒ 9375 moles will remain

<u>Step 3</u>: Calculating moles of acrylonitrile

There will be formed 13070.34 moles of acrylonitrile

mass acrylonitrile = 13070.34 moles * 53.06g/mole =693512.24g = 693.512kg

There can be prepared 693.512 kg of acrylonitrile

7 0

4 years ago