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3 years ago

What are atoms in a simple form

Chemistry

2 answers:

bixtya [17]3 years ago

8 0

They are ofc something ..........

IgorC [24]3 years ago

7 0

Answer:

atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.

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What mass of sucrose (C12H22O11) should be combined with 520 g of water to make a solution with an osmotic pressure of 8.15 atm

Anvisha [2.4K]

Answer:

We need 64.2 grams of sucrose

Explanation:

Step 1: Data given

Mass of water = 520 grams = 0.520 kg

Osmotic pressure = 8.15 atm

Temperature = 275 K

Step 2: Calculate molar concentration

Osmotic pressure can be defined as followed:

π = i*M*R*T

⇒π = the osmotic pressure = 8.15 atm

⇒i = the van't Hoff factor of sucrose = 1

⇒M = the molar concentration

⇒ R = the gas constant = 0.08206 L*atm/mol*K

⇒ T = the temperature = 275 K

M = 0.361 M

Step 3: Calculate volume of water

Volume = mass / density

Volume = 520 grams / 1g/mL

Volume = 520 mL

Step 4: Calculate moles of sucrose

Moles sucrose = molar concentration * volume

Moles sucrose = 0.361 M * 0.520 L

Moles sucrose = 0.1877 moles

Step 5: Calculate mass of sucrose

Mass of sucrose = moles sucrose * molar mass sucrose

Mass sucrose = 0.1877 moles * 342.3 g/mol

Mass sucrose = 64.2 grams

We need 64.2 grams of sucrose

6 0

4 years ago

What process is aided by lightning legumes and soul bacteria

g100num [7]

so this is right answer

For reasons that are unclear, no eukaryotic enzymes can break the triple bond of N2. The reduction of N2 to NH3 (nitrogen fixation) is limited to prokaryotes and is catalysed by nitrogenase. Since most of the nitrogen entering the biosphere (around 100 million metric tonnes of N2 per annum) does so through nitrogenase activity (lightning contributes about 10%), those plants that associate with nitrogen-fixing bacteria have a significant selective advantage under conditions of limiting nitrogen.

8 0

3 years ago

How many molecules of ethanol (c2h5oh) (the alcohol in alcoholic beverages) are present in 140 ml of ethanol? the density of eth

Bond [772]

An mL is also equivalent to cm³, signifying that 140 mL is equivalent to 140 cm³. The mass of ethanol is calculated by multiplying the density by the volume.

mass = (140 cm³)(0.789 g/cm³)
mass = 110.46 g

Then, calculate the number of moles of ethanol by dividing the mass by the molar mass of ethanol equal to 46.07 g/mol.
number of moles = (110.46 g/ 46.07 g/mol) = 2.4 mol

Then, multiply the number of moles by the Avogadro's number.
2.4 mol (6.022 x 10²³)
<em> number of molecules = 1.445 x 10²⁴</em>

4 0

3 years ago

Totalitarianism _____.

Bingel [31]

C) is the same as authoritarianism

Explanation:

Totalitarianism is the most extreme and complete form of authoritarianism.

Authoritarianism and totalitarianism are both systems of government over a place.

Authoritarianism is a system of government in which all the all the powers of nation are concentrated to one party or power.
The control all the leadership power in a country.
In such a scenario, the system is against giving the power to the people.
It runs on just one party system.
For totalitarianism narrows down governance to just a person where they seek to control all aspects of public and private life.

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Government brainly.com/question/8775025

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3 0

3 years ago

Read 2 more answers

Answer this in your own words and I will mark brainlist

san4es73 [151]

Answer:

hlo please help me to do my question

4 0

3 years ago

Read 2 more answers