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mel-nik [20]
4 years ago
7

Why are only some minerals found as native minerals? For example, iron and aluminum are almost never found as native elements in

nature.
Chemistry
1 answer:
Keith_Richards [23]4 years ago
7 0

Answer: Metals found as native minerals in nature are not highly reactive

Explanation:

Native minerals refers to minerals that are found in nature in their pure metallic form such as gold. Iron and aluminum are highly reactive metals. Highly reactive metals are far up in the activity series of metals, they have a great tendency towards oxidation. On the other hand, noble metals have less tendency towards oxidation and are found close to the bottom of the activity series for example, gold.

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Why would it be difficult to determine the climate of a place based on one days measurements
IgorC [24]
<span>Climate is the general weather pattern of an area over many years.</span>
6 0
4 years ago
7th grade science , please don’t get the answer from the internet :(
Liula [17]

Answer:

See the answer below

Explanation:

1. Organisms produce energy for cells by chemically breaking down and unlocking the energy locked-up within food materials in a process known as cellular respiration. The unlocked energy is then utilized for the cell's metabolic activities.

2. Cellular respiration can be aerobic or anaerobic.

Aerobic respiration involves the breakdown of carbohydrates in the presence of oxygen to yield energy in the form of ATP while carbon dioxide and water are produced as by-products.

        C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP

Anaerobic respiration involves the breakdown of carbohydrates in the absence of oxygen to produce ATP and lactic acid as a by-product. The lactic acid is later oxidized to carbon dioxide and water to prevent it from building up.

       C_6H_1_2O_6 -> 2C_3H_6O_3 + ATP

3. Photosynthesis and cellular respiration are both considered metabolic processes that take place in living organisms. However, photosynthesis is peculiar only to green plants and some algae while respiration is common to all living organisms. While photosynthesis is anabolic, that is, it involves the building up of materials; respiration is said to be catabolic because it involves the breaking down of materials.

During photosynthesis, inorganic products are utilized to produce carbohydrates for plants with oxygen gas released as a by-product according to the following equation:

       6CO_2 + 6H_2O --> C_6H_1_2O_6 + 6O_2

During respiration, the food taken by living organisms is broken down to unlock the energy in it for metabolic activities according to the following equation:

     C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP

7 0
3 years ago
40.32 kg NaHCO3
Alex17521 [72]

In 40.32 kg of NaHCO₃, there are 2.890 × 10²⁶ formula units of NaHCO₃.

<h3>What is a formula unit?</h3>

A formula unit is the empirical formula of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations.

  • Step 1: Convert 40.32 kg to g.

We will use the conversion factor 1 kg = 1000 g.

40.32 kg × (1000 g/1 kg) = 4.032 × 10⁴ g

  • Step 2: Convert 4.032 × 10⁴ g to moles.

We will use the molar mass of NaHCO₃ as the conversion factor.

4.032 × 10⁴ g × (1 mol/84.01 g) = 479.9 mol

  • Step 3: Convert 479.9 moles to formula units (fu).

We will use Avogadro's number as the conversion factor.

479.9 mol × (6.022 × 10²³ fu/1 mol) = 2.890 × 10²⁶ fu

In 40.32 kg of NaHCO₃, there are 2.890 × 10²⁶ formula units of NaHCO₃.

Learn more about formula units here: brainly.com/question/2165878

7 0
2 years ago
Nitrogen has a melting point of -210.0°C and a boiling point of -195.8°C. What is nitrogen's state of matter at -170°C?
mamaluj [8]

Answer:

gas -170 is hotter than -195

Explanation:

7 0
3 years ago
Automobile catalytic Converters use a platinum callus to reduce air pollution by changing emissions such as carbon monoxide CO2
natka813 [3]

Answer:

14 mol O₂

Explanation:

The reaction between CO and O₂ is the following:

CO + O₂ → CO₂

We balance the equation with a coefficient 2 in CO and CO₂ to obtain the same number of O atoms:

2CO + O₂ → 2CO₂

As we can see from the balanced equation, 1 mol of O₂ is required to react with 2 moles of CO. Thus, the conversion factor is 1 mol of O₂/2 mol CO. We multiply the moles of CO by the conversion factor to calculate the moles of O₂ that are required:

28 mol CO x 1 mol of O₂/2 mol CO = 14 mol O₂

6 0
2 years ago
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