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Andreas93 [3]
3 years ago
7

Can somebody please help me please?

Chemistry
2 answers:
Phoenix [80]3 years ago
8 0

Answer:

7.74%

<em>Hope this helped! Have a good day.</em>

lozanna [386]3 years ago
4 0

Answer:

7.74

Explanation:

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list examples of foliated and nonfoliated rocks explain the difference between the two metamorphic rocks
weqwewe [10]

Explanation:

Foliated metamorphic rocks such as gneiss, phyllite, schist and slate have a layered or banded appearance that is produced by exposure to heat. Non Foliated rocks such as hornfels, marble and quartzite does not have a layered or banded appearance

5 0
4 years ago
Typically, water runs through the baseboard copper tubing and, therefore, fresh hot water is constantly running through the pipi
Ugo [173]

Answer:

-3.617 °C

Explanation:

Step 1: Given data

Mass of water (m): 210.0 g

Energy released in the form of heat (Q): -3178 J (the minus sign corresponds to energy being released)

Specific heat of water (c): 4.184 J/g.°C

Temperature change (ΔT): ?

Step 2: Calculate the temperature change

We will use the following expression.

Q = c × m × ΔT

-3178 J = 4.184 J/g.°C × 210.0 g × ΔT

ΔT = -3.617 °C

6 0
3 years ago
For the chemical reaction 2HBr(aq)+Ba(OH)2(aq)⟶2H2O(l)+BaBr2(aq) write the net ionic equation, including the phases.
Crazy boy [7]

Answer:

2H⁺(aq) + 2OH⁻(aq)  --> 2H2O(l)

Explanation:

2HBr(aq)+Ba(OH)2(aq)⟶2H2O(l)+BaBr2(aq)

We break the compounds into ions. Only compounds in the aqueous form can be turned into ions.

The ionic equation is given as;

2H⁺(aq)  +  2Br⁻(aq)  + Ba²⁺(aq) + 2OH⁻(aq)   --> 2H2O(l)  +  Ba²⁺(aq)  + 2Br⁻(aq)

Upon eliminating the spectator ions; The net equation is given as;

2H⁺(aq) + 2OH⁻(aq)  --> 2H2O(l)

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P⁻³ electronic structure
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Answer:

The phosphate anion (PO4 3-) represents the fully ionized form of phosphoric acid (H3PO4).

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