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olga_2 [115]
3 years ago
14

Which substance contains only 1 kind of atom

Chemistry
2 answers:
Nataliya [291]3 years ago
8 0
Elements are substances that contain only 1 kind of atom.
Marizza181 [45]3 years ago
6 0

Answer:a chemical element

Explanation:a chemical element because i looked it up on google

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Help please stuck and confused
Alecsey [184]
I’m pretty sure it’s none of the above cause I’m googling it a bunch and and it say you use the dideoxy method
7 0
2 years ago
What is the systematic name of NaCl​
alekssr [168]

Answer:

The answer is Sodium chloride.

Na is sodium and Cl is chlorine.

6 0
2 years ago
A weather balloon contains 1.10X10 to the power of 5 mol of helium and has a volume of 2.70x10 to the power of 6 L at 1.00 atm p
olchik [2.2K]

Answer:

299.14 K or 26°C

Explanation:

The ideal gas law, also called the general gas equation, is the equation of state of a hypothetical ideal gas.

The ideal gas law is often written as

PV = nRT

where P ,V and T are the pressure, volume and absolute temperature;

n is the number of moles of gas and  R is the ideal gas constant.

n=1.10 x 10^5 mol  

V= 2.70 x 10^6 L  

P= 1.00 atm= 101.325 kPa  

R= 8.314 kPa*L/ mol*K

when the formula is  rearranged, T=PV/ nR  

T = (101.325kPa * 2.70 x 10^6 L)/ (1.10 x 10^5 mol * 8.314 kPa*L/ mol*K)  

T = 299.1421917 K

or

T = 299.14 - 273.15 = 25.99 =  26°C

4 0
3 years ago
What are the benefits of a model to demonstrate the atomic theory?
Norma-Jean [14]

Answer:

Atomic models are important because, they help us visualize the interior of atoms and molecules, and thereby predicting properties of matter.

Explanation:

We study the various atomic models in our course of study because, it is important for us to know, how did people come to the present concept of an atom. How did physics evolve from classical to quantum physics.

All these are important for us to know and thus, knowledge about various atomic models, their discoveries and drawbacks and finally improvements based on scientific evidence present at that time is important for us to understand the underlying theory very well.

8 0
2 years ago
Find the mass of electron​
Bad White [126]

Answer: mass of electron is

9.10938356 × 10^-31 kilograms

Explanation:

5 0
3 years ago
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