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tiny-mole [99]
3 years ago
14

What are bacteria I don't get what bacteria is so what is bacteria?

Chemistry
2 answers:
mafiozo [28]3 years ago
6 0
Bacteria is single-celled microorganisms. Bacteria have different shapes and can cause diseases.
Elodia [21]3 years ago
5 0

Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats.

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In which of the following sets are the charges given correctly for all the
Ronch [10]

Answer:

B) K⁺, Sr²⁺ , O²⁻

Explanation:

Potassium is present in group one. It is alkali metal and have one valance electron.Potassium need to lose its one valance electron and form cation to get complete octet.

That's why it shows K⁺.

Sr is alkaline earth metal. It is present in group two. It has two valance electrons. Strontium needed to lose its two valance electrons and get stable electronic configuration.

When it loses its two valance electrons it shows cation with charge of +2.

Sr²⁺

Oxygen is present in group 16. It has sex valance electrons. It needed two more electrons to complete the octet. That's why oxygen gain two electron and form anion with a charge of -2.

O²⁻

3 0
3 years ago
What is the final concentration (M) of a solution prepared by diluting 50.0 mL of a solution to a volume of
docker41 [41]
0.600
D) 0.600 is the final concentration of the solution of KCl.
V1 = 50.0 mL.
6 0
2 years ago
An isotope undergoes radioactive decay. The new isotope that forms has an atomic number that is 2 less than the original isotope
jeka57 [31]
It is an alpha decay because when this phenomena occurs an atomic nucleus emits an alpha particle (helium nucleus) and consequentially decays into another atom with a mass number that is reduced by four an atomic number that is reduced by 2 two. The helium atom consists of two protons and two neutrons.

Therefore, the answer is <span>alpha decay because alpha particles have two protons and two neutrons</span>
3 0
2 years ago
Read 2 more answers
Use the periodic table to match each of the following element symbols to its name, atomic mass, or atomic number. Match Term Def
Nataly [62]

 The Match  of element  to  its  name, atomic  mass   is as below


element               symbol              atomic mass  or atomic  number

Antimony                Sb                         51

 sulfur                     S                            32

 Silicon                    Si                           14


<u><em>Explanation</em></u>

 From periodic table Antimony   is a chemical   element with  symbol Sb   and atomic number 51.

 Sulfur  on the  other hand  is a  chemical  element  with  symbol  S  and  has  a atomic  mass  of 32


silicon  is an element  with symbol Si    and  atomic number 14

5 0
3 years ago
Read 2 more answers
How many liters of 0.305 M K3PO4 solution are necessary to completely react with 187 mL of 0.0184 M NiCl2 according to the balan
Mashutka [201]

Answer:

6.55 mL of K₃PO₄ are required

Explanation:

We need to propose the reaction, in order to begin:

2K₃PO₄ (aq) + 3NiCl₂(aq) →  Ni₃(PO₄)₂ (s) ↓ + 6KCl (aq)

Molarity = mol/L (Moles of solute that are contained in 1 L of solution.)

M = mol / volume(L).  Let's find out the moles of chloride:

- We first convert the volume from mL to L → 187 mL . 1L / 1000mL = 0.187L

0.0184 M . 0.187L = 0.00344 moles of NiCl₂

Ratio is 3:2. Let's propose this rule of three:

3 moles of chloride react with 2 moles of phosphate

Then, 0.00344 moles of NiCl₂ will react with (0.00344 . 2) /3 = 0.00229 moles of K₃PO₄

M = mol / volume(L) → Volume(L) = mol/M

Volume(L) = 0.00229 mol / 0.350 M = 6.55×10⁻³L

We convert the volume from L to mL → 6.55×10⁻³L . 1000mL /1L = 6.55 mL

5 0
3 years ago
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