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Viefleur [7K]
3 years ago
13

Which cell type is represented by number 1?

Chemistry
1 answer:
alexira [117]3 years ago
4 0

where is the graph i need it to answer haha put the graph then i will answer
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How much energy is evolved during the reaction of 51.2 g of al, according to the reaction below? assume that there is excess fe2
sesenic [268]

Answer : The amount of energy evolved during the reaction is, -807.696KJ.

Solution : Given,

\Delta H=-852KJ

Mass of Al = 51.2 g

Molar mass of Al = 27 g/mole

First we have to calculate the moles of Al.

\text{ Moles of Al}=\frac{\text{ Mass of Al}}{\text{ Molar mass of Al}}=\frac{51.2g}{27g/mole}=1.896moles

The balanced combustion reaction is,

Fe_2O_3+2Al\rightarrow Al_2O_3+2Fe

From the given reaction, we conclude that

As, 2 moles of Al evolved energy = -852KJ

So, 1.896 moles of Al evolved energy = \frac{-852KJ}{2moles}\times 1.896moles=-807.696KJ

Therefore, the amount of energy evolved during the reaction is, -807.696KJ.

8 0
3 years ago
What is the melting point of glucose?
vitfil [10]

Answer:294.80°F

Explanation:

6 0
3 years ago
Read 2 more answers
Which of these tasks falls under the responsibility of a forensic scientist?
Varvara68 [4.7K]

Answer:

Training officers in how to properly collect evidence

Explanation:

Forensic science is an interesting branch of science that involves the use of scientific procedures to solve a crime case. It encompasses collection of physical evidence from the crime scene and analyzing it in a laboratory using scientific means.

A forensic scientist is the individual in charge of performing these scientific procedures. His/her major role is to run the scientific analysis of the physical evidence brought in by the officers, however, he/she can also perform the task of training officers in how to properly collect evidence, in order not to damage the evidence or render it invalid for use.

8 0
3 years ago
What is the number of atoms in a 2.35g piece of Gold (Au) ?
ololo11 [35]
Atomic mass gold ( Au) = 196.96 a.m.u

196.96 g ------------ 6.02x10²³ atoms
2.35 g -------------- ??

2.35 x (6.02x10²³) / 196.96

=> 7.18x10²¹ atoms


6 0
3 years ago
The attractive forces between sodium and chloride ions are called:
Vedmedyk [2.9K]
Dipole-dipole forces are probably the simplest to understand. You probably already know that in an ionic solid like NaCl, the solid is held together by Coulomb attractions between the oppositely-charges ions. The Na+ and Cl- ions alternate so the Coulomb forces are attractive
3 0
3 years ago
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