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Brums [2.3K]
4 years ago
14

I need to know #22-27

Chemistry
1 answer:
Sedaia [141]4 years ago
7 0

valence shick hydro gCl2  CaL2

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Please help me with this
Svetradugi [14.3K]
The third one is the correct answer :)
6 0
4 years ago
If the reactants of wood when burning weigh 10 kgs, how much will the products weigh?
aksik [14]

Answer:

the weight of products is is equal the weight of the wood plus the weight of oxygen that was used to burn that wood, so weigh of the product is greater than 10 kilograms.

Explanation:

Conservation of mass (mass is never lost or gained in chemical reactions), during chemical reaction no particles are created or destroyed, the atoms are rearranged from the reactants to the products.

In this example wood (mostly carbon) and oxygen are reactants and carbon dioxide (mostly) is product of reaction.

7 0
3 years ago
The nucleus of a lead atom has a charge of 82 protons what are the drection and magnitude
KATRIN_1 [288]

Answer:

left

Explanation:

7 0
3 years ago
Suppose that the mixture in problem 4 is at 15 OC, where the pure vapor pressures are 12.5 mmHg for water and 32.1 mmHg for etha
EleoNora [17]

Answer:

Explanation:

Since we are not given the mole fraction of ethanol and water; we will solve this theoretically.

Using Raoult's Law:

P_A = (P_o)_A*X_A

For water:

(P)w = P_o \times \text{mole fraction of water}

where P_o of water = 12.5 mmHg

Then, the vapor pressure of water:

(P)w = 12.5 \ mmHg \times \text{mole fraction of water}

For ethanol:

P_E = P_o \times \text {mole fraction of ethanol}

and the P_o of ethanol = 32.1 mmHg

Then, the vapor pressure of ethanol:

P_E = 32.1 \ mmHg \times \text {mole fraction of ethanol}

The total vapor pressure T_P = P_W + P_E

The total vapor pressure = (12.5 \ mmHg \times \text{mole fraction of water}) + (32.1 \ mmHg \times \text {mole fraction of ethanol})

3 0
3 years ago
Jennifer is learning the parts of the cell and knows that there must be a structure responsible for maintaining the homeostasis
Tatiana [17]
The answer will be the cell membrane
8 0
3 years ago
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