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2 years ago

James chadwick, like ernest rutherford, had to infer that neutrons were present in

1 answer:

7 0

The claim that scientific knowledge is based on observation and inference is that science is always about empirical evidence , and when making observations , we can get some evidences and inference which serves a conclusion gotten on basis of evidence and reasoning.

<h3>What is scientific knowledge ?</h3>

Science knowledge serves as the knowledge that is based and focus on empirical evidence.

It should be noted that in Science disciplines their is sharing of common rules of evidence which is needed in evaluation of explanations about natural systems.

Read more about scientific knowledge ;

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What is the mass, in grams, of two liters of water?

erma4kov [3.2K]

Well, 2 litres is 2 kilograms. 1000 grams = 1 kilogram

So that means that 2 litres of water = 2000 grams

3 0

3 years ago

ASAP WILL GIVE BRAINLIEST!!

Nataly_w [17]

Answer:

The answer to your question is a) N₂ b) 3.04 g of NH₃

Explanation:

Data

mass of H₂ = 2.5 g

mass of N₂ = 2.5 g

molar mass H₂ = 2.02 g

molar mass of N₂ = 28.02 g

molar mass of NH₃ = 17.04 g

Balanced chemical reaction

3H₂ + 1 N₂ ⇒ 2NH₃

Calculate the theoretical yield 3H₂ / N₂ = 3(2.02) / 28.02 = 0.22

Calculate the experimental yield H₂/N₂ = 2.5/2.5 = 1

Conclusion

The limiting reactant is N₂ (nitrogen) because the experimental proportion was higher than the theoretical proportion.

28.02 g of N₂ -------------------- (2 x 17.04) g of NH₃

2.5 g of N₂ -------------------- x

x = (2.5 x 2 x 17.04) / 28.02

x = 85.2 / 28.02

x = 3.04 g of NH₃

6 0

3 years ago

Which represents the self-ionization of water at 25°C? H2O + H2O 2H2 + O2 H2O + H2O H2O2 + H2 H2O + H2O 4H+ + 2O2- H2O + H2O H3O

Vitek1552 [10]

The fourth answer is correct
H20 + H20 H30 + 0H-

6 0

3 years ago

Read 2 more answers

Write the balanced chemical equation for the reaction of glucose (C6,H12,O6) with oxygen gas to produce carbon dioxide gas

Fittoniya [83]

Answer:

C6H12O6+6O2=6Co2+6H2o

4 0

3 years ago

What is the fraction of the hydrogen atom's mass (11h) that is in the nucleus? the mass of proton is 1.007276 u, and the mass of

ololo11 [35]

Hello there!

To determine the fraction of the hydrogen atom's mass that is in the nucleus, we have to keep in mind that a Hydrogen atom has 1 proton and 1 electron. Protons are in the nucleus while electrons are in electron shells surrounding the nucleus. The mass of the nucleus will be equal to the mass of 1 proton and we can express the fraction as follows:

$Mass Fraction= \frac{mass 1 Proton}{mass H atom} = \frac{1,007276 u}{1,007825}=0,9995$

So, the fraction of the hydrogen atom's mass that is in the nucleus is 0,9995. That means that almost all the mass of this atom is at the nucleus.

Have a nice day!

3 0

3 years ago