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Andrew [12]
3 years ago
9

Select all that apply. Atoms are made up of _____. neurons photons protons neutrons

Chemistry
1 answer:
valkas [14]3 years ago
8 0
Hello!

Atoms are made of 3 types of particles: Electrons, protons, and neutrons. The protons and neutron (referred to collectively as nucleons) make up the nucleus (center) of the atom, while the electrons surround the nucleus.

Answer:
Protons, neutrons, and electrons.
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Calculate the standard cell emf for the reaction: ClO3−(aq)+3Cu(s)+6H+(aq)→Cl−(aq)+3Cu2+(aq)+3H2O(l) Pt is used as an inert elec
Rama09 [41]

<u>Answer:</u> The standard EMF of the cell is 1.11 V

<u>Explanation:</u>

For the given chemical equation:

ClO_3^-(aq)+3Cu(s)+6H^+(aq.)\rightarrow Cl^-(aq.)+3Cu^{2+}(aq.)+3H_2O(l)

The half reaction follows:

<u>Oxidation half reaction:</u>  Cu(s)\rightarrow Cu^{2+}+2e^-;E^o_{Cu^{2+}/Cu}=0.34V    ( × 3)

<u>Reduction half reaction:</u> ClO_3^-(aq.)+6H^+(aq.)+6e^-\rightarrow Cl^-(aq.)+3H_2O(l);E^o=1.45V

To calculate the E^o_{cell} of the reaction, we use the equation:

E^o_{cell}=E^o_{cathode}-E^o_{anode}

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

Calculating the E^o_{cell} using above equation, we get:

E^o_{cell}=1.45-0.34=1.11V

Hence, the standard EMF of the cell is 1.11 V

6 0
3 years ago
What defines the group of organisms referred to as protist
avanturin [10]
Well protists quite very as organisms i.e it is hard to say if an organism is a protist. Some main features of protists are that they have 
1. A membrane enclosed nucleus
2.They are mainly single celled

Also protista are found mainly anywhere water is present for example damp soil, pools and lakes. 

Hope this helps :).
3 0
4 years ago
Calculate the molar solubility of ca(io3)2 in each solution below. the ksp of calcium iodate is7.1 × 10−7.
e-lub [12.9K]
In order to find the answer, use an ICE chart:

Ca(IO3)2...Ca2+......IO3- 
<span>some.......0..........0 </span>
<span>less.......+x......+2x </span>
<span>less........x.........2x 
</span>
<span>Ca(IO₃)₂ ⇄ Ca⁺² + 2 IO⁻³
</span>
K sp = [Ca⁺²][IO₃⁻]²
K sp = (x) (2 x)² = 4 x³
7.1 x 10⁻⁷ = 4 x³
<span>x = molar solubility = 5.6 x 10</span>⁻³ M

The answer is 5.6 x 10 ^ 3 M. (molar solubility)
5 0
3 years ago
Read 2 more answers
The atomic symbol superscript 40 subscript 19 upper k. represents potassium-40 (k-40), a radioactive isotope that has 19 protons
Oksana_A [137]

Answer:

40/18AR

Explanation:

sorry my answer was late but i hope this helps someone else! I got it right on the test

8 0
2 years ago
How many significant figures are in the measurement 0.0056 ke?
creativ13 [48]
Question:
how many significant figures are in the measurement 0.0056 ke?
a. four
b. two
c. five
d. three

answer:
b. two
3 0
3 years ago
Read 2 more answers
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