All categories

3 years ago

Which work practice should be followed to best prevent the ingestion of chemicals?

1 answer:

7 0

The work practice should be followed to best prevent the ingestion of chemicals is "Do not eat or drink in regulated areas".

Eating or drinking in regulated areas are unsafe as people may accidently take in chemicals through their mouth.

Furthermore, in order to avoid the ingestion of chemicals, people should wash their hands immediately they are done using chemicals.

Lastly, pipetting should not be carried out through the use of mouth.

You can read related question here:

https://brainly.ph/question/797691

You might be interested in

Modulus of resilience is: (a) Slope of elastic portion of stress- strain curve (b) Area under the elastic portion of the stress-

Vedmedyk [2.9K]

Answer: b) Area under the elastic portion of the stress-strain curve

Explanation:

By definition, resilience is the strain-energy density stored by the material when it is stressed to the proportional limit defined by Hooke's Law. Resilience is given by the following expression:

μ(r) = $\sigma(pl)^{2}$ / 2E

μ(r) is the modulus of resilience

σ(pl) is the stress to the proportional limit

E is the elastic modulus

When you look at the stress-strain curve, the area under the elastic portion (up to the proportional limit) can be obtained by the area of a triangle with base equal to the strain (σ) and height equal to the stress (ε):

Ω = (b . h) / 2 = (σ(pl) . ε) / 2

Using Hooke's Law: σ = E . ε → ε = σ/E

Replacing the expression in the area equation:

Ω = (σ(pl) . ε) / 2 = $\sigma(pl)^{2}$ / 2E = μ(r)

3 0

3 years ago

dentify a semiconducting material and provide the value of its band gap) that could be used in: (a) (1 point) red LED (b) (1 poi

OLga [1]

Answer:

(a) Aluminum Indium Gallium Phosphide (AlInGaP). Band gap = 1.81eV ≈ 2eV

(b) Gallium Nitride (GaN). Band Gap = 3.4eV

(d) Zinc Selenide (ZnSe). Band Gap = 2.82eV

(e) Gallium Phosphide (GaP). Band Gap = 2.24eV

Explanation:

LED's are semi-conducting materials that convert electrical energy to light energy. The light color emitted from the LED depends on the semi-conducting material and other compositions.

The band gap of the semi-conductor determines its wavelength. High band gap semi-conductors emit lower wavelengths which means greater power(UV semi-conducting macterials fall under this category).

5 0

3 years ago

Air is to be compressed so that its volume is reduced to half of its original volume if the initial pressure is 200 kPa and the

Alex_Xolod [135]

Answer:

$P_{2} = 527.803\,kPa$

Explanation:

The politropic relationship for a isentropic process is:

$\frac{P_{2}}{P_{1}} = \left(\frac{V_{1}}{V_{2}} \right)^{\gamma}$

Where $\gamma$ is the ratio of specific heats

The final pressure is:

$P_{2} = P_{1}\cdot \left(\frac{V_{1}}{V_{2}}\right)^{\gamma}$

$P_{2} = (200\,kPa)\cdot (2)^{1.4}$

$P_{2} = 527.803\,kPa$

7 0

3 years ago

What is meant by the dead state. Discuss its significance.

Jlenok [28]

Answer and Explanation:

Dead state can be defined as the state in which both the are ambient properties and the system properties are coincident to each other.

Since the surroundings are similar and these surroundings are fixed also, there will be no kinetic energy and also the gravitational potential energy for both the systems is also equal.

Practically, in thermodynamic studies, the Gravitational potential energy of the system is negligible. This state holds significance because it leads to the termination of all the processes that are spontaneous in nature.

4 0

4 years ago

The diffusion coefficients for iron in nickel are given at two temperatures:T (K)D (m2/s)12739.4 × 10–1614732.4 × 10–14(a) Deter

hram777 [196]

Answer:

The diffusion coefficients for iron in nickel are given at two temperatures:

T (K) 1273 1473

D ( $m^{2}$ /s) 9.4 × $10^{-16}$ 2.4 × $10^{-14}$