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Vladimir79 [104]

3 years ago

15

5. True or False: If one thing in a food web is affected, it will only probably affect the organism that directly relies on it f

or energy. *
1 point
A. True
B. False

1 answer:

34kurt3 years ago

8 0

A because if something happened to that organism then the organism relying on it will either go extinct or just die out due to starvation

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In a first–order reaction (A → B and rate = k [A]), tripling the concentration of A will have what effect on the reaction rate?

Natali [406]

Answer:

Tripling the concentration of A will triple the reaction rate.

Explanation:

For a first–order reaction hat has a rate law:

<em>Rate = k[A].</em>

It is clear that the reaction rate is directly proportional to the concentration of A.

<em>Rate ∝ [A].</em>

<u><em>So, Tripling the concentration of A will triple the reaction rate.</em></u>

5 0

3 years ago

Is salt a iconically bounded compound?

Ann [662]

Answer:

ionically bonded.

Explanation:

7 0

3 years ago

Read 2 more answers

The total bonding energy for the products of a reaction is 2535 kJ/mol and the bonding energy of the reactants is 1375 kJ/mol. C

omeli [17]

Answer:

1160 kJ/mol

Explanation:

To get the enthalpy of the reaction take ΔH products- ΔH reactants

5 0

3 years ago

Identify the reactants and products in the following chemical equation: Zn +2HCl --> ZnCl2 + H2 *

Ad libitum [116K]

Answer:

A.

Explanation:

zinc and hydrochloric acid reacts to form zinc chloride and hydrogen.

hope it helps. :)

7 0

2 years ago

A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile's engine cooling system. If a car's cooli

vladimir1956 [14]

Answer:

109.09°C

Explanation:

Given that:

the capacity of the cooling car system = 5.6 gal

volume of solute = volume of the water; since a 50/50 blend of engine coolant and water (by volume) is used.

∴ $\frac{5.60}{2}gallons = 2.80 gallons$

Afterwards, the mass of the solute and the mass of the water can be determined as shown below:

mass of solute = $(M__1}) = Density*Volume$

$= 1.1g/mL *2.80*\frac{3785.41mL}{1gallon}$

$= 11659.06grams$

On the other hand; the mass of water = $(M__2})= Density*Volume$

$= 0.998g/mL *2.80*\frac{3785.41mL}{1gallon}$

$= 10577.95 grams$

Molarity = $\frac{massof solute*1000}{molarmassof solute*massofwater}$

= $\frac{11659.06*1000}{62.07*10577.95}$

= 17.757 m

≅ 17.76 m

∴ the boiling point of the solution is calculated using the boiling‑point elevation constant for water and the Molarity.

$\Delta T_{boiling} = k_{boiling}M$

where,

$k_{boiling}$ = 0.512 °C/m

$\Delta T_{boiling}$ = 100°C + 17.56 × 0.512

= 109.09 °C

6 0

3 years ago