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GuDViN [60]
3 years ago
9

Why is the cell a basic unit of life?

Chemistry
2 answers:
Tju [1.3M]3 years ago
7 0

Answer:

Cells make up the smallest level of a living organism such as yourself and other living things. The cellular level of an organism is where the metabolic processes occur that keep the organism alive. That is why the cell is called the fundamental unit of life.

Explanation:

put it in your own words

tiny-mole [99]3 years ago
7 0
Because it is the smallest living thing it contains the genetic material for survival
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What is the momentum of a 750-kg car traveling at a velocity of a 25 m/s?
hichkok12 [17]

Momentum = mass x velocity 750x25 = 18750 kg-m/s.


3 0
3 years ago
Convert 22.5 grams H2O to moles​
kenny6666 [7]

Answer:

18.01528

Explanation:

The answer is 18.01528.

4 0
3 years ago
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A 4.36-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water. An acid-base indicator is added, and the
BARSIC [14]

Answer:

Rb+

Explanation:

Since they are telling us that the equivalence point was reached after 17.0 mL of   2.5 M HCl were added , we can calculate the number of moles of HCl which neutralized our unknown hydroxide.

Now all the choices for the metal cation are monovalent, therefore the general formula for our unknown is XOH and  we know the reaction is 1 equivalent acid to 1 equivalent base. Thus we have the number of moles, n,  of XOH and from the relation n = M/MW we can calculate the molecular weight of XOH.

Thus our calculations are:

V = 17.0 mL x 1 L / 1000 mL = 0.017 L

2.5 M HCl x 0.017 L = 2.5 mol/ L x 0.017 L = 0.0425 mol

0.0425 mol = 4.36 g/ MW XOH

MW of XOH = (atomic weight of X + 16 + 1)

so solving the above equation we get:

0.0425 = 4.36 / (X + 17 )

0.7225 +0.0425X = 4.36

0.0425X = 4.36 -0.7225 = 3.6375

X = 3.6375/0.0425 = 85.59

The unknown alkali is Rb which has an atomic weight of 85.47 g/mol

6 0
3 years ago
Which of the following information is necessary to describe an object's motion?
Zepler [3.9K]

Answer: The correct option is B.

Explanation: To describe the motion of an object, we use the equations of motion.

  1. v=u+at
  2. s=ut+\frac{1}{2}at^2
  3. 2as=v^2-u^2

From the above equations, we require position, speed and direction through which we an calculate the displacement, velocity and acceleration.

To calculate the complete motion of an object, we require all the three factors.

Hence, the correct option is B.

8 0
3 years ago
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A chemical reaction was used to separate a sample into its components. What conclusion about the sample can be formed based on t
Dvinal [7]
C, a compound because it means it was made up of more than one element but, still able to be separated from the other compound(s)
3 0
3 years ago
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