Any organism or particle that can cause an infectious disease is called a

Chemistry

1 answer:

PIT_PIT [208]3 years ago

5 0

Answer:

PATHOGEN.

Explanation:

In biology, pathogen refers to any organism or particle that is capable of causing infectious diseases. Thus, all the microbes that cause diseases such as bacteria, virus, fungi, viroid, etc are collectively known as pathogen. The entrance of pathogen into the human body usually stimulate the immune system. The immune system functions by recognizing pathogens and by capturing and destroying them.

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A 68-g sample of sodium is at an initial temperature of 42 °c. if 1840. joules of heat are applied to the sample, what is the fi

nadezda [96]

Answer:

Final T = 64.0°C.

Explanation:

The amount of heat absorbed by Na (Q) can be calculated from the relation:

where, Q is the amount of heat absorbed by Na (Q = 1840 J),

m is the mass of Na (m = 68.0 g),

c is the specific heat capacity of Na (c = 1.23 J/g °C),

ΔT is the temperature difference (final T - initial T) (ΔT = final T - 42.0°C).

∵ Q = m.c.ΔT.

∴ (1840 J) = (68.0 g)(1.23 J/g °C)(final T - 42.0°C)

(final T - 42.0°C) = (1840 J)/(68.0 g)(1.23 J/g °C) = 22.0°C.

<em>∴ final T</em> = 22.0°C + 42.0°C = <em>64.0°C.</em>

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3 years ago

A mixture contains 20% iron ions by mass. What mass of iron chloride (FeCl) would

omeli [17]

Mass of iron chloride (FeCl₂) : 22.68 g

<h3>Further explanation</h3>

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison

With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired

<h3 />

$\tt mass~Fe=\dfrac{Ar~Fe}{MW~FeCl_2}\times mass~FeCl_2$