What is The relationship between a carnivore and an herbivore can be stated as

1 answer:

3 0

Predator and prey because herbivores are animals that only eat plants implying they wouldnt eat the carnivore as the carnivore would eat them because carnivores only eat animals such as the herbivore

not sure if that made sense but its B

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The barium isotope 133ba has a half-life of 10.5 years. a sample begins with 1.1×1010 133ba atoms. how many are left after (a) 5

Deffense [45]

Given: Half-life of 133Ba = t1/2 = 10.5 years.

The radio-active materials obeys 1st order dissociation kinetics. Therefore we have:
k = 0.693 / t1/2 = 0.693 / 10.5 = 0.066 years-1.

Also, $k = \frac{2.303}{t} log \frac{Co}{Ct}$
where, Co = initial concentration = 1.1×10^10 atoms
Ct = conc. of Ba at time t.
......................................................................................................................

Answer 1: For t = 5 years
 $0.066 = \frac{2.303}{5} log \frac{Co}{Ct}$
Therefore, $log\frac{Co}{Ct}$ = 0.1432
Therefore, Co/Ct = 1.3908
Therefore, Ct = 7.9086 X 10^9 atoms.

Number of 133Ba atoms left after 5 years = 7.9086 X 10^9.
....................................................................................................................

Answer 2: For t = 30 years
$0.066 = \frac{2.303}{30} log \frac{Co}{Ct}$
Therefore, $log\frac{Co}{Ct}$ = 0.8597
Therefore, Co/Ct = 7.2402
Therefore, Ct = 1.5193 X 10^9 atoms.

Number of 133Ba atoms left after 30 years = 1.5193 X 10^9.
........................................................................................................................

Answer 3: t = 180 years
$0.066 = \frac{2.303}{180} log \frac{Co}{Ct}$
Therefore, $log\frac{Co}{Ct}$ = 5.1585
Therefore, Co/Ct = 1.44 X 10^5
Therefore, Ct = 7.6367 X10^4 atoms.

Number of 133Ba atoms left after 180 years = 7.6367 X10^4.

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4 years ago

What quantity is represented by the metric system prefix deci-?

blagie [28]

The answer would be 0.1 hope i helped you out :)

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Sterling silver is:

dexar [7]

Answer:

It’s D

Explanation:

It’s an alloy so it is not pure. If you take a small sample and analyze it, the mixture will be similar throughout. Think of Gatorade as a homogeneous mixture because it is the same concentration of all ingredients throughout. Think of pizza for heterogeneous mixtures. There isn’t the pepperoni (or whatever you prefer) throughout.

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Find the formula of the ionic compound made from sodium (Na) and iodine (I).

Vitek1552 [10]

The formula of ionic compound made from sodium (Na) and iodine (l) is

NaI

Explanation

An ionic compound is are compounds made up of ions.
The ions are atoms or ions that loses electron to form cation or gain electron to form anion.
Metal for this case loses electron while non metal gain electrons
In Nal Na ( a Metal) loses one electron while I (non metal) gain one electron to form an ionic compound.

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Why is frying an egg an example of a chemical change?

MA_775_DIABLO [31]

In chemistry, a chemical change is a change which involves the production of new chemical substances. Frying an egg is an example of a chemical change because of the reaction between the oil and the substance in the presence of supplied heat.

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