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Lorico [155]
3 years ago
9

Maria wants to determine which type of disinfectant kills the most bacteria.

Chemistry
2 answers:
murzikaleks [220]3 years ago
6 0

Answer:

well she can test both of the soap by putting one on and plate and another on the other plate and which ever is cleaner is your answer

morpeh [17]3 years ago
4 0

Answer:

Put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

Explanation:

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Can someone please help me with this question? Thanks in advance.
sveta [45]

Answer:

1. Fe + H2SO4 = FeSO4 + H2

iron + sulfuric acid = duretter + hydrogen

2. Mg + 2 HNO3 = Mg(NO3)2 + H2

Magnesium + nitric acid = magnesium nitrate +hydrogen

3. Zn + 2 HCl = ZnCl2 + H2

Zinc + hydrogen chloride= zinc chloride+ hydrogen

6 0
3 years ago
Read 2 more answers
Given the balanced equation, calculate the mass of product that can be prepared from 2.36 g of zinc metal.
Nataly_w [17]
Moles of Zn present= 2.36/65.4= 0.0361 moles
Therefore maximum moles of ZnO= 0.0722
Mass of one mole of ZnO= 81.4
Mass of ZnO produced= 0.0722 x 81.4= 5.87g
6 0
3 years ago
Select the correct answer.
Nuetrik [128]

Answer:

A binary covalent compound is composed of two different elements (usually nonmetals). For example, a molecule of chlorine trifluoride, ClF3 contains 1 atom of chlorine and 3 atoms of fluorine.

Rule 1. The element with the lower group number is written first in the name; the element with the higher group number is written second in the name. Exception: when the compound contains oxygen and a halogen, the name of the halogen is the first word in the name.

Rule 2. If both elements are in the same group, the element with the higher period number is written first in the name.

Rule 3. The second element in the name is named as if it were an anion, i.e., by adding the suffix -ide to the root of the element name (e.g., fluorine = F, "fluoride" = F-; sulfur = S, "sulfide" = S2-).

Rule 4. Greek prefixes are used to indicate the number of atoms of each element in the chemical formula for the compound. Exception: if the compound contains one atom of the element that is written first in the name, the prefix "mono-" is not used.

Explanation:

5 0
3 years ago
Read 2 more answers
Why was Becquerel’s experiment a first step in discovering radioactivity?
galina1969 [7]
This was because the experiment showed that a substance could emit radiation even while it was not exposed to light.
5 0
3 years ago
Read 2 more answers
An(A)=25,n(B)=40,n(AuB)=50<br><br>AnB​
puteri [66]

Answer:

5879

Explanation:

3896_+746864uyrhufhj

5 0
3 years ago
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