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3 years ago

A scientist would most likely need to update her model when it

Chemistry

2 answers:

NeTakaya3 years ago

7 0

Answer:

When the model no more supports the latest results.

Explanation:

Model is the term used for the demonstration of a system or an idea, a process of an object that has an application in illustrating and demonstrating a phenomenon. The central models are used by the scientists for both in research and in communicating an explanation. The models are used by the scientists to offer the way on how to illustrate data in order to demonstrate it as a hypothesis. However, scientists are required to update their models when it no longer supports the present results.

Marizza181 [45]3 years ago

5 0

A scientist would most likely need to update her model when it no longer supports the latest results.

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Which of the following would represent a single displacement reaction between Potassium Bromide (K^+Br^-) and Iodine (I), which

ra1l [238]

Answer:

Option : KBr + I -> KBr+I

Explanation:

Single-replacement reaction or single displacement reactions are a type of chemical reactions in which a whole compound reacts with an element in such a way that the element takes place of one of the compound's own elements and sets it free.

If we talk about KBr and I displacement reaction is not possible among these because Iodine is less reactive than Bromine that is why it will not react with KBr or replace Br.

KBr + I -> KBr+ I

Potassium Bromide + Iodine -> Potassium bromide + Iodine

Hope it help!

5 0

3 years ago

In a mixture of 3 gases what is the total pressure of the gases if Gas A exerts a pressure

kirill [66]

Answer:

760 mm of Hg

Explanation:

If the gases A , B and C are non reacting , then according to Dalton's Law of Partial Pressure the total pressure exerted is equal to sum of individual partial pressure of the gases .

If there are n , number of gases then ,

$P_{total}= P_1+P_2+P_3+\dots +P_n$

Here ,

Partial pressure of Gas A = 400mm of Hg
Partial pressure of Gas B = 220 mm of Hg
Partial pressure of Gas C = 140mm of Hg

Hence the total pressure exerted is ,

$P_{total}= P_{Gas\ A }+P_{Gas\ B }+P_{Gas\ C }$

Substitute ,

$P_{total}=( 400 + 220 + 140 )mm\ of \ Hg$

Add ,

$P_{total}= 760\ mm\ of \ Hg$

Hence the total pressure exerted by the gases is 760 mm of Hg.

I hope this helps.

4 0

2 years ago

Predict the missing particle or nuclide.

Advocard [28]

Answer:

beta minus emission

Explanation:

Beta radiations:

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminum is used to block the beta radiation

²³⁹₉₃Np→ ²³⁹₉₄Pu + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.

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3 years ago

What type of fault usually occurs because of compression?

lianna [129]

Answer:c

Explanation:

4 0

3 years ago

Read 2 more answers

Henry divides 1.060g by 1.0mlbto find the density of his water sample. How many significant figures should he include in the den

kykrilka [37]

Henry divides 1.060 g by 1.0 mL to find the density of his water sample.
He should include THREE significant figures in the density value that hereports.

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3 years ago