3 years ago

Which of the following are forms that chemical hazards can be in?

Chemistry

1 answer:

BabaBlast [244]3 years ago

4 0

Fire, explosions, acid, fumes-take your pick here.

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The movement of tectonic plates is so slow and gradual that you cannot see or feel them moving. As a result, scientist depend on

guapka [62]

Answer:

centimeters per year

Explanation:

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2 years ago

1. A 10 g gold coin is heated from 25°C to 50°C (CAu is 0.13 J/g-°C). What is the H?

Oksanka [162]

The correct answer is + 32.5 J because heat is absorbed here by copper not evolved also after calculation we will find the H value is positive, lets calculate it:
H = m C Δt where:
m = 10 g
C = 0.13 J/g.°C
Δ t = final temperature - initial temperature = 50 - 25 = + 25 °C
so H = 10 x 0.13 x (+25) = + 32.5 J

4 0

3 years ago

C= ( F - 32) / 1.8<br> 86 F = ?

egoroff_w [7]

<em>Hence</em><em>,</em><em> </em><em>84</em><em>°</em><em>F</em><em> </em><em>is</em><em> </em><em>30</em><em>°</em><em>C</em><em> </em><em>in</em><em> </em><em>Celsius</em><em>.</em><em>.</em>