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Anestetic [448]
2 years ago
10

HELP PLEASEEEEEEEE HELPPPPPPP (IMAGE)

Chemistry
1 answer:
lapo4ka [179]2 years ago
5 0
1. Liquid
2. Gas
3. Solid
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An object that sticks to iron
Dvinal [7]

Answer:

A magnet

Explanation:

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2 years ago
Cooling the concentrated ammonia and hydrochloric acid before carrying out the experiment increased the time taken for the white
Crazy boy [7]
Hope it helps you :)

8 0
2 years ago
How to do q solution, qrxn, moles of Mg , and delta Hrxn?
Helga [31]

Answer:

<em> 14, 508J/K</em>

ΔHrxn =q/n

where q = heat absorbed and n = moles

Explanation:

<em>m = mass of substance (g) = 0.1184g</em>

1 mole of Mg - 24g

<em>n</em> moles - 0.1184g

<em>n = 0.0049 moles.</em>

Also, q = m × c × ΔT

<em> Heat Capacity, C of MgCl2 = 71.09 J/(mol K)</em>

<em>∴ specific heat c of MgCL2 = 71.09/0.0049 (from the formula c = C/n)</em>

<em>= 14, 508 J/K/kg</em>

ΔT=  (final - initial) temp = 38.3 - 27.2

= 11.1 °C.

mass of MgCl2 = 95.211 × 0.1184 = 11.27

⇒ q = 11.27g × 11.1 °C × <em>14, 508 j/K/kg </em>

<em>= 1,7117.7472 J °C-1 g-1</em>

<em />

<em>∴ ΔHrxn = q/n</em>

<em>=1,7117.7472  ÷ 0.1184 </em>

<em>= 14, 508J/K</em>

6 0
3 years ago
What type of salt would you get in a reaction between an oxide and hydrochloric acid?
grandymaker [24]

Answer:

C. chloride i hopeit's right..

3 0
2 years ago
Write the symbol for every chemical element that has atomic number less than 75 and atomic mass greater than 173.5 u.
bearhunter [10]
Following are the chemical elements that have atomic mass greater than 173.5 u and atomic number less than 75.

1.  Lutetium
                  Atomic Number  =  71
                  Atomic Mass      =  174.97 u

2.  Hafnium
                  Atomic Number  =  72
                  Atomic Mass      =  178.49 u

3.  Tantalum
                  Atomic Number  =  73
                  Atomic Mass      =  180.95 u

4.  Tungsten
                  Atomic Number  =  74
                  Atomic Mass      =  183.85 u
8 0
3 years ago
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