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mamaluj [8]
2 years ago
13

Describe two shortcomings of the pennium model for isotopes

Chemistry
1 answer:
umka21 [38]2 years ago
3 0

let me know when u find out plz because i would like to know as well its one of my chemistry qustions in an assiment. :)

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If two gases react, pumping more gas into the reaction container will _____ the rate of the reaction.
d1i1m1o1n [39]

Answer:

increase the rate of reaction

5 0
2 years ago
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What is the mass of nickel(ii) nitrate (182.71 g/mol) dissolved in 25.0 ml of 0.100 m ni(no3)2 solution?
Studentka2010 [4]
The mass  of  ni(NO3)2  that  dissolved  in  25.0 ml  of 0.100m  ni(NO3)2  solution  is  calculated  as   follows

fin  the  number  of  moles   =  molarity   x  volume in  liters

=25  x0.100/ 1000= 2.5  x10^-3  moles
mass  =  mass  x  molar  mass
= 2.5  x10^-3 moles x  182.71 g/mol  = 0.457  grams
4 0
2 years ago
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What is the mass of a sample of water containing 3.55×1022 molecules of h2o?
ad-work [718]
6,02×10²³ -------------- 18g
3,55×10²² --------------  xx=\frac{3,55*10^{22}*18g}{6,02*10^{23}}=10,61*10^{22-23}g=10,61*10^{-1}g=1,061g


6 0
2 years ago
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7. Two teams are competing in a tug-of-war contest. Team A is pulling at 4000N and Team B is pulling at 4900N is the opposite di
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Basically team B would win since it is exerting a force of 900N unlike team A ( you can tell by doing 4900N minus 4000N ). It is very unbalanced.

5 0
2 years ago
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In the first step of glycolysis, the given two reactions are coupled. reaction 1:reaction 2:glucose+Pi⟶glucose-6-phosphate+H2OAT
dmitriy555 [2]

Answer: Reaction 1 is non spontaneous.

Explanation:

According to Gibb's equation:

\Delta G=\Delta H-T\Delta S

\Delta G = Gibbs free energy  

\Delta H = enthalpy change

\Delta S = entropy change  

T = temperature in Kelvin

When \Delta G = +ve, reaction is non spontaneous

\Delta G= -ve, reaction is spontaneous

\Delta G= 0, reaction is in equilibrium

For the given reaction 1: glucose+Pi\rightarrow glucose-6-phosphate+H_2O \Delta G=+13.8kJ/mol

As for the reaction 1 , the value of Gibbs free energy is positive and thus the reaction 1 is non spontaneous.

6 0
2 years ago
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