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yawa3891 [41]
3 years ago
14

Marc wants to make his audience think about his presentation topic after it is over. What would help him achieve this goal?

Chemistry
2 answers:
Dafna11 [192]3 years ago
6 0
B) ending with a stimulating question
sladkih [1.3K]3 years ago
4 0
B.) ENDING WITH A STIMULATING QUESTION
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Which of the following would form a heterogeneous mixture?
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The Answer:C. A mixture of an electrolyte and water.
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A liquid that occupies a volume of 4.7 liters has a mass of 5.1 kilograms what is the density of the liquid in kg/L
kotykmax [81]
Divide each by 4.7 to get ur kg/L which is 1.085kg/1L
4 0
3 years ago
Someone please answer this..​
Vedmedyk [2.9K]

Answer:

165 g

Explanation:

Law of Conservation of Matter states that neither matter or energy is destroyed but instead transferred.

Since we need a total of 180 g, we need to subtract 15g of one of the products to find the missing amount:

180 g - 15 g = 165 g Cu produced

6 0
3 years ago
Write the balanced Ka and Kb reactions for HSO3- in water. Be sure to include the physical states of each species involved in th
Hunter-Best [27]

Answer:

Ka = [H₃O⁺] [SO₃²⁻] / [HSO₃⁻]

Kb = [OH⁻] [H₂SO₃] / [HSO₃⁻]

Explanation:

An amphoteric substance as HSO₃⁻ is a substance that act as either an acid or a base. When acid:

HSO₃⁻(aq) + H₂O(l) ⇄ H₃O⁺(aq) + SO₃²⁻(aq)

And Ka, the acid dissociation constant is:

<h3>Ka = [H₃O⁺] [SO₃²⁻] / [HSO₃⁻]</h3><h3 />

When base:

HSO₃⁻(aq) + H₂O(l) ⇄ OH⁻(aq) + H₂SO₃(aq)

And kb, base dissociation constant is:

<h3>Kb = [OH⁻] [H₂SO₃] / [HSO₃⁻]</h3>

6 0
3 years ago
Somebody tell me- why do cows go Moo?
m_a_m_a [10]

Answer:

To communicate with each other

Explanation:

Cows use sound (mooing) to communicate with each other and their environment. Cows are herd animals and have complex social structures. Mooing is one way that they interact and how they express their emotions

5 0
3 years ago
Read 2 more answers
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