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ki77a [65]
3 years ago
14

Help me please!! help would be appreciated

Chemistry
2 answers:
VARVARA [1.3K]3 years ago
7 0
Heat always flows from hotter to cooler so most likely B
valina [46]3 years ago
6 0
I don’t know if this is right but I thing It’s B
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How many grams of sucrose (C12H22O11) would be in 8.7 L of a 6.81M solution of sucrose
VladimirAG [237]
<h3><u>Answer;</u></h3>

= 20,280.25 g or 20.28 Kg

<h3><u>Explanation;</u></h3>

Number of moles, n = Molarity × Volume

Molarity = 6.81 M

Volume = 8.7 L

Number of moles = 6.81 × 8.7

                             = 59.247 moles

Mass = Moles × Molar mass

         = 59.247 ×  34.2 g/mol

          = 20,280.25 or

          = 20.28 Kg

7 0
3 years ago
Plz help thank you!!!
Furkat [3]

Answer:

1. Covalent Bond

2. Ionic Bond

Explanation:

Covalent bonds are defined as the bond in which sharing of electrons takes place between atoms. The sharing of electrons is in equal number so that it form a stable balance of attraction and repulsion between atoms. In the given example of CO2 (first image) oxygen is sharing equal number of electrons with carbon to form a stable bond called covalent bond.

Ionic bonds are formed when valence electrons are transferred to other atoms and form oppositely charged ions. In ionic bond formation, the atoms that gain electrons become negatively charged and the atoms that loses electrons become positively charged. In the given example of Ca Cl2, Ca is also giving its 2 valence electrons to each Cl and there is no stable balance of attraction and repulsion between atoms.

Hence, the correct answer is:

1. Covalent Bond

2. Ionic Bond

6 0
3 years ago
We can tell when a chemical reaction occurs by looking
gregori [183]
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Grace [21]

Answer:

Following are the solution to this question:

Explanation:

Following are the lewis structure of the NH_2^{-}:

In the given element two H and one N are used, in which N has 5 valance electrons, and one H has 1 valence which is equal to 2 electrons valance. So, the graph for the given element is defined in the attached file.

3 0
3 years ago
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