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mash [69]
3 years ago
10

Which of these would most likely be considered a pure substance?

Chemistry
2 answers:
Karolina [17]3 years ago
5 0

Answer:

c. Water Vapour

Hope it helps.

aliya0001 [1]3 years ago
4 0

the answer is C- water vapour

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What has more kinetic energy 10kg of bees flying at 10m/s or 10kg of birds flying at 10m/s? Why?
Sloan [31]
<h2>Answer:</h2>

Both of them will have same kinetic energy.

<h2>Explanation:</h2>
  • Kinetic energy is the energy of motion, every object in motion posses some kinetic energy.
  • Kinetic energy can be calculated by the given formula,

i.e,          K.E = 1/2 mv² .

Where, K.E is kinetic energy,

            m is mass of the object

            v is the velocity of the object

  • On observing the formula we can state that K.E is directly proportional to mass(m) and velocity(v) of the object.
  • Obviously, birds have more mass than bees but in question it has given 10 Kg of bees and 10 Kg of birds which means mass is same and also both of them are travelling with same velocity i.e 10m/s and hence both of them will have same kinetic energy(as both of the variables i.e m and v are same).

Result: Both bees and birds have same kinetic energy.

8 0
3 years ago
Which of these statements can be predicted with the help of science?
stira [4]

Answer:

Changes in Climate

Explanation:

because i got it right

3 0
3 years ago
Water will act as a Bronsted lowry acid with which of the following molecules?
Gekata [30.6K]
A. NH3
NH3 + H2O = NH+4 +OH-
4 0
3 years ago
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The ksp of calcium carbonate, caco3, is 3.36 × 10-9 m2. calculate the solubility of this compound in g/l.
maw [93]
CaCO₃ partially dissociates in water as Ca²⁺ and CO₃²⁻. The balanced equation is,
                       CaCO₃(s) ⇄ Ca²⁺(aq) + CO₃²⁻(aq)
Initial                Y                   -                 -
Change           -X                  +X              +X
Equilibrium      Y-X                 X                X

Ksp for the CaCO₃(s) is 3.36 x 10⁻⁹ M²

                Ksp = [Ca²⁺(aq)][CO₃²⁻(aq)]
3.36 x 10⁻⁹ M² = X * X
3.36 x 10⁻⁹ M² = X²
                    X = 5.79 x 10⁻⁵ M

Hence the solubility of CaCO₃(s) = 5.79 x 10⁻⁵ M
                                                     = 5.79 x 10⁻⁵ mol/L

Molar mass of CaCO₃ = 100 g mol⁻¹

Hence the solubility of CaCO₃ = 5.79 x 10⁻⁵ mol/L x 100 g mol⁻¹
                                                 = 5.79 x 10⁻³ g/L

7 0
3 years ago
You were making a cream based sauce for your pasta and decided to add some freshly canned tomatoes to the sauce. It tasted fine,
soldier1979 [14.2K]

Answer & explanation:

Canned fruits and vegetables generally have a high acidity and salinity content, in order to prevent the product from spoiling, in addition to enhancing its flavor.

The cream-based sauce started to curdle due to the acidity present in the canned tomatoes.

By lowering the pH of dairy products, a protein in them called casein begins to clot. It is this clotting of the casein that causes the cream-based sauce to curdle.

7 0
3 years ago
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