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Ne4ueva [31]
3 years ago
7

Question 3

Chemistry
2 answers:
meriva3 years ago
8 0

Answer:

We are dependent on plants and plants need CO2 from enviromen

Explanation:

Liono4ka [1.6K]3 years ago
3 0

Answer:

These are necessary for breathing, drinking etc.

Even they are basic components of our body such as present in DNA etc.

#$#THANK YOU #$#

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Is the formal charge on N the same or different in these two species? Is the formal charge on the same or different in these two
lesya692 [45]

Answer:

a) The formal charge on N is 0 in both species.

Explanation:

The formal charge is calculated using the formular;

FC = V-N-B/2

Where;

V = Number of Valence electrons

N = number of nonbonding valence electrons

B = total number of electrons shared in bonds

In NO2-;

The formal charge of N is given as;

FC = 5 - 2 - 6/2

FC = 0

In HNO2

The formal charge of N is given as;

FC = 0

The correct option is;

a) The formal charge on N is 0 in both species.

5 0
3 years ago
What are properties ?
frozen [14]

Answer:

a

Explanation:

In logic and philosophy, a property is a characteristic of an object; a red object is said to have the property of redness. The property may be considered a form of object in its own right, able to possess other properties.

8 0
3 years ago
What temperature in degrees c is the freezing point of water?
guajiro [1.7K]
The freezing point of water is 0° C. The Celsius (centigrade) scale is based off of water, with the freezing point at 0° and the boiling point at 100°. (Google will probably tell you this in 10 seconds, then you wouldn't have had to wait 7 hours!)
5 0
3 years ago
What would the products of a double-replacement reaction between KBr and CaO be? (Remember: In double-replacement reactions, the
11111nata11111 [884]

ANSWER

\begin{gathered} \text{ 2KBr }+\text{ CaO }\rightarrow\text{ K}_2O\text{ }+\text{ CaBr}_2 \\ Option\text{ B} \end{gathered}

EXPLANATION

Given that;

The two reactants are KBr and CaO

Double replacement reaction is a type of chemical reaction that occur when two reactants exchange cations and anions to yield new products.

\text{ 2KBr + CaO  }\rightarrow\text{ K}_2O\text{ + CaBr}_2

Therefore, the resulting products of the given data are K2O + CaBr2

The correct answer is option B

4 0
1 year ago
How many grams of oxygen are in a half a cup of water
USPshnik [31]

Answer:  2.78 moles of molecular oxygen will occupy 62.22 liters.

Explanation:

8 0
3 years ago
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