33. At the right of a chemical equation are

The role an organism plays in an ecosystem is its<br> habitat<br> population<br> niche<br> community

Hitman42 [59]

The answer for this question is niche.

7 0

3 years ago

If you have 5 moles of carbon dioxide at 30degrees C and under 600mmHg of pressure, what will the volume be

trapecia [35]

Answer:

157.64 L

Explanation:

We'll begin by converting 30 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

T(°C) = 30 °C

T(K) = 30 °C + 273

T (K) = 303 K

Next, we shall convert 600 mmHg to atm. This can be obtained as follow:

760 mmHg = 1 atm

Therefore,

600 mmHg = 600 mmHg × 1 atm / 760 mmHg

600 mmHg = 0.789 atm

Finally, we shall determine the volume of the gas. This can be obtained as follow:

Number of mole (n) = 5 moles

Temperature (T) = 303 K

Pressure (P) = 0.789 atm

Gas constant (R) = 0.0821 atm.L/Kmol

Volume (V) =?

PV = nRT

0.789 × V = 5 × 0.0821 × 303

0.789 × V = 124.3815

Divide both side by 0.789

V = 124.3815 / 0.789

V = 157.64 L

Therefore, the volume of the gas is 157.64 L

7 0

3 years ago

A sample of an unknown compound with a mass of 0.847 g has the following composition: 50.51 % fluorine and 49.49 % iron. When th

sergejj [24]

Answer: 0,4278g of F and 0,4191g of Fe

Explanation: it's possible to calculate the mass of each element by multiplying the percentage (decimal) of the element by the mass of the compound.

For Fluorine (F)

0,847g * 0,5051 = 0,4278g of F

For iron (Fe)

0,847 * 0,4949 = 0,4191g of Fe

This is determined because even when the compound is decomposed, due to conservative law of mass, the decomposition process do not affect the amount of matter, so the mass of the elements remain even if they are separated from the original molecule.

At the end, the sum of the elements masses should be the total mass of the compound.

4 0

3 years ago

Read 2 more answers

What are 3 methods you can use to separate a mixture? Give an example of each.

max2010maxim [7]

Answer:

The three methods we can use to separate a mixture are:

1.sublimation

example: sand and camphor

2.centrifugation

example:cream from milk

3.evaporation

example:salt from sea water

6 0

3 years ago

Si te comes un banano de 125 g, asumiendo que este es 100% potasio, calcula lo siguiente: Determina la cantidad de Kilocalorías

Bond [772]

Answer:

0.0179254 kilocalorías(0,0179254 kilocalorías.)

Explanation:

Paso 1

Encontramos la Energía Calórica del Plátano

Se nos dice que el plátano es 100% potasio, por lo tanto

Fórmula de energía térmica = MCΔT

Dónde

M = Masa de sustancia (gramos)

C = Calor específico (j / g ° c)

ΔT = Cambio de temperatura (Temperatura final - Temperatura inicial) (° C)

Masa de (plátano) potasio = 125g

Calor específico de potasio = 0,75j / g ° C

ΔT = Cambio de temperatura

= 37,3 ° C - 36,5 ° C

= 0,8 ° C

Calor específico del banano

Q = 125 g × 0,75j / g ° C × 0,8 ° C

Q = 75 julios

Por lo tanto, 125 gramos de potasio (plátano) contienen 75 julios de energía.

Paso 2

Convertimos Julios de energía en kilocalorías

1 julio = 0.000239006 kilocalorías

75 julios =

Cruz multiplicar

75 julios × 0.000239006 kilocalorías / 1 julio

= 0.0179254 kilocalorías.

Por tanto, 125 g de plátano contienen 0,0179254 kilocalorías.

3 0

3 years ago