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gayaneshka [121]

3 years ago

8

Competition is likely to occur between which two organisms?

1 answer:

MatroZZZ [7]3 years ago

7 0

<h3>Full question found from another source:</h3>

5. Competition is likely to occur between which two organisms?

A Owls and bacteria

B Deer and butterflies

C Grass and strawberry plants

D Goldfish and rabbits

Answer:

C

Explanation:

Grass and strawberry plants compete for the same resources such as nutrients, water, habitat, and sunlight.

Bacteria and owls rely on completely different resources and mechanisms to survive - bacteria are single cell organisms and owl are complex birds

Deer and butterflies are also are not in competition with eachother - they don't occupy the same habitats, eat the same food or have the same prey.

Goldfish and rabbits will never encounter eachother, given that one lives in water and one lives on land. They do not compete for the same food source or habitat.

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Calculate the energy, in joules, to heat two cubes (silver and copper), each with a volume of 10.0cm, from 15 C to 25 C

Julli [10]

Answer:

For Silver , The heat absorbed = <u>246.75 J</u>

For Copper , The heat is =<u> 343.42 J</u>

<u />

Explanation:

The change in temperature is calculated by:

$\Delta T=T_{2}-T_{1}$

T2 = 25 C

T1 = 15 C

$\Delta T=25-15$

$\Delta T=10^{0}C$

The energy in Joules can be calculated using :

$q=mc\Delta T$

here , m = mass of the substance

c = the heat capacity

q = heat absorbed / released

We need to calculate the mass , In order to determine the value of "q".

<u>Calculation for Silver :</u>

<u><em>The mass is calculated from the density of the element.</em></u>

density of Silver = 10.5 g/ml (look at the table of density)

Volume of Cube = 10 cm^3 (given)

1 cm^3 = 1 mL

10 cm^3 = 10 mL

The mass can be calculated using the formula:

$mass = density\times Volume$

$mass = 10.5\times 10$

$mass = 105grams$

Insert the value of m , c, T in the equation.

for Silver the value of "c"= 0.235 J/gC (Look at the table)

$q=mc\Delta T$

$q=105\times 0.235\times 10$

<u> $q=246.75J$ </u>

<u>Calculation for Copper:</u>

Again first calculate the mass of Copper.

Density of Copper = 8.92 g/ml

Volume = 10 mL

$mass = density\times Volume$

$mass = 8.92\times 10$

$mass = 89.2grams$

Insert the value of m , c, T in the equation.

for Silver the value of "c"= 0.385 J/gC (Look at the table)

$q=mc\Delta T$

$q=89.2\times 0.385\times 10$

<u> $q=343.42J$ </u>

8 0

3 years ago

What is the formula of the ionic compound expected to form between the elements cl and al?

patriot [66]

Ionic compounds are those compounds which are made up of ions. These ions can exist as positive or negative ions. Those ions which has tendency to lose electrons are said to be cations (positive ions) such as metals and those ions which has tendency to gain electrons are said to be anions (negative ions) such as non-metals.

The formula for ionic compounds are given as:

First, the symbols of the cation and anion should be identified. After that, charge on the cation and anion should be identified. Write the chemical formula with the help of drop and swap method.

Now,

The chemical symbols for Aluminium is $Al$ and for chlorine is $Cl$ .

The charge on $Al$ is +3 and on $Cl$ is -1, neglect the positive and negative signs and by using drop and swap method i.e. the charge on the aluminium will go as a subscript of the chlorine and the charge on the chlorine will go as a subscript of the aluminium which is shown in the image.

Thus, the chemical formula between $Al$ and $Cl$ is $AlCl_{3}$ .

7 0

3 years ago

A) week 1<br><br> b) week 2<br><br> c) week 3<br><br> d) week 4

nalin [4]

Try c I think is the most accurate one

4 0

3 years ago

Read 2 more answers

Show the relationship of number of moles and volume in Avogadro's law using data. Write your calculations and answer on a separa

leonid [27]

Answer:

See below ~

Explanation:

The calculated values of V/n :

⇒ 1.5/0.3 = 5

⇒ 3/0.6 = 5

⇒ 4.5/0.9 = 5

⇒ 6/1.2 = 5

⇒ 7.5/1.5 = 5

1. From this we understand that the calculated values of V/n remain constant, equal to <u>5</u> in this case.

2. The volume-mole graph will be a straight line passing through the origin. (Attached below)

7 0

2 years ago

How much carbon dioxide is released when it is fully combusted with 4Kg of ethanol with more than enough oxygen? How do you work

Karolina [17]

Answer:

7.640 kg

Explanation:

Step 1: Write the balanced complete combustion equation for ethanol

C₂H₆O + 3 O₂ ⇒ 2 CO₂ + 3 H₂O

Step 2: Calculate the moles corresponding to 4 kg (4000 g) of C₂H₆O

The molar mass of C₂H₆O is 46.07 g/mol.

4000 g × 1 mol/46.07 g = 86.82 mol

Step 3: Calculate the moles of CO₂ released

86.82 mol C₂H₆O × 2 mol CO₂/1 mol C₂H₆O = 173.6 mol CO₂

Step 4: Calculate the mass corresponding to 173.6 moles of CO₂

The molar mass of CO₂ is 44.01 g/mol.

173.6 mol × 44.01 g/mol = 7640 g = 7.640 kg

5 0

3 years ago