All categories

2 years ago

I need help o will give 10 points

Chemistry

1 answer:

beks73 [17]2 years ago

6 0

Answer:

Plants use carbon dioxide to make their food

Explanation:

The most important role of carbon dioxide in the ecosystem is that plants use the compound to make food.

Since plants are primary produces, the food is taken by other organisms in the ecosystem for their own nourishment.

In the process of photosynthesis, green plants manufacture their own food.
They use inorganic substances from the ecosystem and the energy from the sun to produce organic matter.
The inorganic substance is carbon dioxide and water
So, the carbon dioxide is an important raw material for photosynthesis to occur.

You might be interested in

Salt water has a density of 1.183g/mL. A ball has a density of 0.0134 g/mL. Will the ball float or sink?

madreJ [45]

The ball will float as it’s density is less than the salt water.

8 0

2 years ago

Suppose 2.4 g of Mg reacts with 10.0 g of O2, to create magnesium oxide. How much magnesium oxide is produced?

o-na [289]

Answer:

3.98 g

Explanation:

Step 1. Write the balanced chemical reaction. In this case, magnesium reacts with oxygen to produce magnesium oxide:

$2~Mg(s) + O_2 (g)\rightarrow 2~MgO (s)$

Step 2. Calculate the number of moles of magnesium:

$n_{Mg} = \frac{2.4~g}{24.305~g/mol} = 0.0987~mol$

Step 3. Calculate the number of moles of oxygen:

$n_{O_2} = \frac{10.0~g}{32.00~g/mol} = 0.3125~mol$

Step 4. Identify the limiting reactant comparing the equivalents. Equivalent of Mg:

$eq_{Mg} = \frac{0.0987~mol}{1} = 0.0987~mol$

Equivalent of oxygen:

$eq_{O_2} = \frac{0.3125~mol}{2} = 0.15625~mol$

Therefore, Mg is the limiting reactant.

Step 5. According to the stoichiometry of this reaction:

$n_{Mg} = n_{MgO} = 0.0987~mol$

Step 6. Convert the number of moles of MgO into mass:

$m_{MgO} = 0.0987~mol\cdot 40.304~g/mol = 3.98~g$

5 0

2 years ago

If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3

mafiozo [28]

4.8 g/cm3 with sig figs since it's mass/volume you divide 76 grams by 16 cm3

6 0

2 years ago

Tungsten is used in light bulbs because its high...

lara [203]

Tungsten is used in light bulbs because of its high melting point.

It is also used because it has the lowest vapor pressure and greatest tensile strength.

6 0

2 years ago

Read 2 more answers

Give five examples of structures with this formula (c6h12). at least one should contain a ring, and at least one should contain

hammer [34]

Answer: -

Following are five examples of structures with the chemical formula C₆H₁₂

Compound A is Hexene.

Compound B is 2-Hexene.

Compound C is 3-Hexene.

Compound D is Cyclohexane.

Compound E is Methylcyclopentane.

As we can see Hexene, 2- Hexene and 3-Hexene all have double bonds.

Cyclohexane and Methylcyclopentane contains a ring.

7 0

2 years ago

I need help o will give 10 points ​

I need help o will give 10 points