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spayn [35]
3 years ago
9

What is a toxic chemical?

Chemistry
1 answer:
My name is Ann [436]3 years ago
8 0

Answer:any substance which may be harmful to the environment or hazardous to your health if inhaled, ingested or absorbed through the skin.

Explanation:

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Observation and assessment are most effective when
Artist 52 [7]
I think the answer is A. Hope that helped :)
6 0
4 years ago
A balloon filled with helium has a volume of 4.5 × 103 L at 25°C. What volume will the balloon occupy at 50°C if the pressure su
Tom [10]

Answer:

V_2 = 4.87 * 10^3

Explanation:

This question is an illustration of ideal Gas Law;

The given parameters are as follows;

Initial Temperature = 25C

Initial Volume = 4.5 * 10³L

Required

Calculate the volume when temperature is 50C

NB: Pressure remains constant;

Ideal Gas Law states that;

PV = nRT

The question states that the pressure is constant; this implies that the constant in the above formula are P, R and n

Divide both sides by PT

\frac{PV}{PT} = \frac{nRT}{PT}

\frac{V}{T} = \frac{nR}{P}

Represent \frac{nR}{P} with k

\frac{V}{T} = k

k = \frac{V_1}{T_1} = \frac{V_2}{T_2}

At this point, we can solve for the required parameter using the following;

\frac{V_1}{T_1} = \frac{V_2}{T_2}

Where V1 and V2 represent the initial & final volume and T1 and T2 represent the initial and final temperature;

From the given parameters;

V1 = 4.5 * 10³L

T1 = 25C

T2 = 50C

Convert temperatures to degree kelvin

V1 = 4.5 * 10³L

T1 = 25 +273 = 298K

T2 = 50 + 273 = 323K

Substitute values for V1, T1 and T2 in \frac{V_1}{T_1} = \frac{V_2}{T_2}

\frac{4.5 * 10^3}{298} = \frac{V_2}{323}

Multiply both sides by 323

323 * \frac{4.5 * 10^3}{298} = \frac{V_2}{323} * 323

323 * \frac{4.5 * 10^3}{298} = V_2

V_2 = 323 * \frac{4.5 * 10^3}{298}

V_2 = \frac{323 * 4.5 * 10^3}{298}

V_2 = \frac{1453.5 * 10^3}{298}

V_2 = 4.87 * 10^3

Hence, the final volume at 50C is V_2 = 4.87 * 10^3

7 0
3 years ago
What is the second hottest layer of the atmosphere?
kherson [118]
Well, I say the answer is Thermosphere! Hope I helped :) 
7 0
4 years ago
Please help~~ thank you so much
deff fn [24]

Answer:

c. 2 and 3

Explanation:

Ca(NO3)2 names calcium nitrate.

Ca metal, O, N - nonmetals, so Ca(NO3)2 is ionic compound.

It is solid and white.

4 0
3 years ago
How to answer this ?
tamaranim1 [39]

Answer:

as follow

Explanation:

2

a acceptor

b Donor electron

3

A. MgBr2 B. Na2O

C. HCl D. AlCl3

E. K3N F. CaS

* the number is under the charactor/atoms

4 0
3 years ago
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