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Answer:

The most common injury caused by working with machinery are cuts and burns.

Explanation:

Cuts and burns are the  most common injury caused by working with machines unsafely.

Any physiological harm to living tissue brought on by acute physical stress is referred to as an injury. An injury can be brought on by a blunt trauma, a piercing trauma, burning, exposure to chemicals, asphyxiation, or overexertion, and it can also happen accidentally. Any area of the body can become injured, and each injury has a unique set of symptoms.

Major injuries are normally treated by a medical practitioner, and the type of treatment depends considerably on the injury. The most frequent reason for accidental human injury or injury-related death is traffic crashes. Chronic conditions are different from injuries. Cuts and burns are the  most common injury caused by working with machines unsafely.

Therefore,  Cuts and burns are the  most common injury caused by working with machines unsafely.

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Answer:

D - ingestion

Explanation:

Answer:

15.1

Explanation:

(11.34 -9.63)/11.34)0100.00

(1.71/11.3) X 100.00

0,151 X 100.0 = 15.1

Answer:

Yes.

Explanation:

Answer:

=0=0==00=0=0=

Explanation:

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Answer:

baking the dough to form the crust

In making a pizza, the process that involves a chemical change is baking the dough to form the crust.

Chemical changes occur when a substance combines with another to form an entirely new substance.

During a chemical change there is a formation of an entirely new product different from the original product.

Thus, In making a pizza, the process that involves a chemical change is baking the dough to form the crust.

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Answer:

In a compound, chemical energy is _____required__________ when bonds break.

Explanation:

Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (−94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.

Answer:

Sn has a different charge in each of the compounds.

+2, +4 charges, respectively.  

Explanation:

SnO has subscripts of 1, which means it takes only one of each element to make the compound.

We know that oxygen's charge is -2 from the periodic table.

In order for the compound to be neutrally charged,

Sn + O = 0

Sn - 2 = 0.

So, Sn has a +2 charge.

Likewise with the second compound, we know O has a -2 charge.

Sn + 2*(-2) = 0

Sn - 4 = 0

Sn = +4

+2 and +4 are different charges on the Sn cation.  

Answer:

It is a exothermic reaction.

Explanation:

Exothermic reactions release energy to their surroundings.

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Answer:

Because people can now see microscopic items

Explanation:

People can now see the cells because they are so small we cant see them with the enhanced microscope we can see everything that's micro

Answer:9.38 x 10^−3 m

Explanation:

Answer: 9.38 x 10^−3 m

Explanation:

Answer:

Explanation:

50 * 10^100 is 50 googols in scientific notation... but

come on, who would write that in standard form...

The equilibrium temperature is close to the initial temperature of water because water has a greater heat capacity compared to the hot metal, and it will require more energy to raise the low temperature of water.

The given parameters;

According to principle of conservation of energy, the heat lost by a hot body is equal to heat gained by a cold body.

[tex]Q_{hot} = Q_{cold}[/tex]

The equilibrium temperature is close to the initial temperature of water because water has a greater heat capacity compared to the hot metal, and it will require more energy to raise the low temperature of water.

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Answer:

Covalent bond between identical atoms

Covalent bonds occur between identical atoms or between different atoms whose difference in electronegativity is insufficient to allow transfer of electrons to form ions. ... The two hydrogen atoms are attracted to the same pair of electrons in the covalent bond.

Answer:

Valency of nitrogen in the given compounds:

N₂O₃ = +3

N₂O₅ = +5

NO = +2

-TheUnknownScientist 72

Answer:

gas

Explanation:

at Standard Temperature and Pressure Carbon monoxide (CO), carbon dioxide (CO2) and nitrogen dioxide (NO2) exist as gases

Option C is correct

Covalent compounds are compounds that are characterized by strong Intra-molecular bonds and they are solids as they have higher molecular weights

But when compounds like Carbon monoxide (CO), carbon dioxide (CO2), and nitrogen dioxide (NO2) are formed with low molecular weight covalent bonds They exist as gases

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Answer:

Five Postulates of KMT.

Gas particles travel in straight lines unless they collide with other particles or the walls of the container.

Gas particles have negligible volume compared to the free space between them..

Molecular collisions are perfectly elastic and kinetic energy is conserved.

Gas particles experience negligible intermolecular forces, there are no attractive or repulsive forces between particles.

The average kinetic energy of the particles in a sample of gas is proportional to the absolute temperature.

The fifth postulate is very important to note as it relates kinetic energy to temperature.

For a gaseous particle most of the kinetic energy is in translation.

Answer:

Aluminum, because it is in group 13 and has three valence electrons.

The formation of molecule can easily be shown by drawing Lewis dot structure. Since  atom's Lewis dot structure has three dots. So Option A is correct option.

Lewis dot structure is a way to represent the valence electron of an element in the form of dot. These are mainly beneficial in understanding the chemical formula of covalent compound.

It is given that the Lewis dot structure of molecule contain only 3 electron. That means that element contains 3 electrons in its valence shell.

Aluminum's electronic configuration is 2,8,3

Lithium's electronic configuration is 2,1

Magnesium's has electronic configuration as 2,8,2

Potassium's electronic configuration is 2,8,8,1

Thus Aluminum is the only element that has 3 electron in its outermost shell So, Option A is correct option

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Answer:

True

Explanation:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points.

Answer:ultraviolet rays

Explanation:

Answer:

= 100u. Hence 10 g = 0.1 mole. Hope it's helpful to u

Answer:

a hydrogen ion will have more or fewer electrons than a standard hydrogen atom.

Explanation:

ions are atoms that have lost or gained elections. this applies to ions in general.

Answer:

is not completely ionized in water

The ethanoic acid (acetic acid) is considered as a weak acid because it does not releases all of its hydrogen in water, rather it dissociates partially and establishes an equilibrium with its conjugate base.

Answer:

Oxygen is negative charge

Explanation:

And The 2 Hydrogens are positive charges

Answer:

C:  [tex]\frac{6 mol}{2 L}[/tex]

Explanation:

we can use the molarity equation

[tex]M = \frac{mol}{L}[/tex]

so to find M we plug in what we know, which is 6 moles of NaCl and 2 L of water, which gives us:

[tex]\frac{6 mol}{2 L}[/tex]

Answer:6 mol/2L

Explanation:just took the quiz