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4 years ago

Define the word cell

Chemistry

2 answers:

Arlecino [84]4 years ago

3 0

<span>the smallest structural and functional unit of an organism</span>

Alexus [3.1K]4 years ago

3 0

Basic unit of life.
makes up all living thing.

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Container A holds 717 mL of an ideal gas at 2.80 atm. Container B holds 174 mL of a different ideal gas at 4.30 atm. Container A

horsena [70]

Answer:

3.09 atm

Explanation:

Given that:

Volume of container A = 717 mL

Pressure of container A = 2.80 atm

Volume of container B = 174 mL

Pressure of container B = 4.30 atm

Now, if the valve are being removed and the gases are allowed to mix together; then

The total final pressure can be calculated by using the formula:

$P_f = \dfrac{P_AVA+P_BV_B}{V_A+V_B}$

$P_f = \dfrac{2.80*717+4.30*174}{717+174}$

$P_f = \dfrac{2007.6+748.2}{891}$

$P_f = \dfrac{2755.8}{891}$

$\mathbf{P_f =3.09 \ atm}$

4 0

3 years ago

Over time the Mexican-Free Tailed bat has evolved to be able to echolocate in the dark to find prey. Bats are able to see, but d

Law Incorporation [45]

Answer:

Light

Explanation:

1 They were not albe to see at night because it was dark so the lack of light caused them to use echolocation.

Hope this helps

4 0

3 years ago

which type of chemical reaction occurs faster at equilibrium the formation of production from reactants or that of reactants fro

Degger [83]

Answer :-

None of the forward reaction or backward reaction will be faster at equilibrium as

definition of equilibrium is that phase in which the rate of formation of product from reactant and rate formation of reactant from product is equal

and hence , both will be form at equal rate !!

3 0

3 years ago

Iron pyrite, FeS2, is known as Fool's Gold because it is a shiny yellow solid which is similar in appearance to gold. Iron pyrit

kobusy [5.1K]

Answer:

Explanation:

The algebraic sum of all the oxidation numbers of all atoms in a neutral compound is zero.

In order to know the formula of the negative Sulfur ion in pyrite, we must determine its oxidation state.

Let us make the make the oxidation number of sulfur = x

Therefore, FeS₂:

+2 +2x = 0

+2 = -2x

x = -1

The formula of the negative ion is S⁻

4 0

3 years ago

When dissolved in water, a neutral molecule of calcium chloride dissociates into three ions - one calcium ion and two chloride i

Mashcka [7]

Explanation:

Calcium chloride is an ionic compound as it is formed by transfer of an electron to each chlorine atom.

So, being an ionic compound calcium chloride is able to dissociate completely into water.

Hence, the dissociation reaction will be as follows.

$CaCl_{2}(s) \rightarrow Ca^{2+}(aq) + 2Cl^{-}(aq)$

Since, two electrons has been lost by single calcium atom. Therefore, calcium atom will have a charge of +2.

Thus, we can conclude that the charge on the calcium ion, in elementary units is +2.

8 0

3 years ago