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Firlakuza [10]
3 years ago
14

A solid is placed in a solution. Which observation most likely indicates that a chemical reaction has occurred?

Chemistry
1 answer:
Ierofanga [76]3 years ago
3 0
A change in color, odor, or texture   

(Also rust)
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2. List the following from least complex to most complex.
nekit [7.7K]

Answer:

Bacterial cell, cell with a nucleus, multicellular organism

7 0
3 years ago
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Ascorbic acid, of vitamin c (c6h8o6), is an essential vitamin. it cannot be stored by the body and must be present in the diet.
Inessa [10]

Molecular formula of ascorbic acid is C_{6}H_{8}O_{6}

Molar mass of ascorbic acid = (6 * 12 g/mol) + (8 * 1 g/mol) + (6 * 16 g/mol) = 176 g/mol

Converting 500.0 mg of ascorbic acid to moles: We use molar mass of ascorbic acid to convert mass to moles.

500.0 mg * \frac{1 g}{1000 g} *\frac{1 mol}{176 g} =   0.00284 mol

Converting 500.0 mg of ascorbic acid to molecules: The conversion factor used is 1 mole = 6.022*10^{23} molecules

500.0 mg * \frac{1 g}{1000 mg}*\frac{1 mol}{176 g} * \frac{6.022*10^{23}molecules}{1 mol} = 1.71 * 10^{21} molecules

5 0
3 years ago
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What is an ionic bond?
quester [9]

Answer:

D = A bond resulting from the transfer of one or more electrons.

Explanation:

Ionic bond:

It is the bond which is formed by the transfer of electron from one atom to the atom of another element.  

Explanation:

Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

For example:

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion.  

while by sharing of electrons covalent bond is formed.

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.  

The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial negative.

7 0
3 years ago
This element has the most protons of any element in group 15.?
lozanna [386]
Bismuth... hope it helps!
5 0
3 years ago
How should I answer this question?
Arte-miy333 [17]

like this variable variable variable variable

8 0
2 years ago
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