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alexgriva [62]
3 years ago
9

To find the number of protons, neutrons, and electrons in a particular atom, you must know the mass number and the atomic number

of the atom
Chemistry
1 answer:
dezoksy [38]3 years ago
5 0
Atomic number shows the number of protons and electrons in an atom.
Number of neutrons = mass number - atomic number.

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Most matter is made up of _____, rather than single _____.
bixtya [17]

Answer:

molecules, elements

Explanation:

molecules are a mix of elements

7 0
1 year ago
A gas mixture at 535.0°C and 109 kPa absolute enters a heat exchanger at a rate of 67.0 m3/hr. The gas leaves the heat exchanger
SVEN [57.7K]

Answer:

the heat rate required to cool down the gas from 535°C until 215°C is -2.5 kW.

Explanation:

assuming ideal gas behaviour:

PV=nRT

therefore

P= 109 Kpa= 1.07575 atm

V= 67 m3/hr = 18.6111 L/s

T= 215 °C = 488 K

R = 0.082 atm L /mol K

n = PV/RT = 109 Kpa = 1.07575 atm * 18.611 L/s /(0.082 atm L/mol K * 488 K)

n= 0.5 mol/s

since the changes in kinetic and potencial energy are negligible, the heat required is equal to the enthalpy change of the gas:

Q= n* Δh = 0.5 mol/s * (- 5 kJ/mol) =2.5 kW

7 0
3 years ago
The organic compounds that are divided into two types, simple and complex, are called _____.
Sati [7]

The organic compounds that are divided into two types, simple and complex, are called carbohydrates.

Carbohydrates are diveded into twy types: simple and complex (starches, fiber, glycogen).

Simple carbohydrates are made of one (monosaccaharides) or two sugar units.

Complex carbohydrates are made up of many sugar units.

For example, glucose (C₆H₁₂O₆) is a simple carbohydrate.

Glucose is chemical compound composed of six carbon atoms, twelve hydrogen atoms and six oxygen atoms.

Starch is a polymeric carbohydrate consisting of a large number of glucose units bonded by glycosidic bond. Starch is a white, tasteless and odorless powder that is insoluble in cold water or alcohol.

More about carbohydrates: brainly.com/question/20290845

#SPJ4

6 0
2 years ago
The amount of oxygen bound to hemoglobin _____.
Luba_88 [7]
The amount of oxygen bound to hemoglobin is 98.5% 
7 0
3 years ago
Read 2 more answers
Write the chemical equation for the reaction that occurs when 6 m hcl solution is added to the reaction mixture.
Semenov [28]
When u add the solution to the chemical's
6 0
3 years ago
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