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pantera1 [17]
3 years ago
13

Select the correct answer.

Chemistry
1 answer:
Illusion [34]3 years ago
5 0

Answer: the new force will be 1/9 of the original force

Explanation: Please see attachment for explanation

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Imperial shrimp attach themselves to sea cucumbers for transportation. The interaction saves energy and improves food availabili
Sveta_85 [38]

Answer:

a

Explanation:

commensalism

4 0
3 years ago
A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If
VMariaS [17]

Answer:

41.9 g

Explanation:

We can calculate the heat released by the water and the heat absorbed by the steel rod using the following expression.

Q = c × m × ΔT

where,

c: specific heat capacity

m: mass

ΔT: change in temperature

If we consider the density of water is 1.00 g/mol, the mass of water is 125 g.

According to the law of conservation of energy, the sum of the heat released by the water (Qw) and the heat absorbed by the steel (Qs) is zero.

Qw + Qs = 0

Qw = -Qs

cw × mw × ΔTw = -cs × ms × ΔTs

(4.18 J/g.°C) × 125 g × (21.30°C-22.00°C) = -(0.452J/g.°C) × ms × (21.30°C-2.00°C)

ms = 41.9 g

3 0
3 years ago
Calculate the molarity of a solution<br> made by 1,5kg of K. CO₂ in 850 mL<br> of water.
anastassius [24]

Answer:

17.83M

Explanation:

Given parameters:

Mass of KCO₂ = 1.5kg

Volume of water  = 850mL

Unknown:

Molarity of solution  = ?

Solution:

Molarity is defined as the number of moles per unit volume. It is the number of moles of solute in a given volume of solution.

   Molarity  = \frac{number of moles }{volume}

Number of moles of solute  = \frac{mass of KCO_{2} }{molar mass}

  Molar mass of KCO₂  = 39 + 12 + 3(16) = 99g/mol

  Number of moles  = \frac{1500}{99}   = 15.15moles

   850mL : gives 0.85L

     

Molarity  = \frac{15.15}{0.85}   = 17.83M

8 0
3 years ago
Complete the statement about the nature of scientific knowledge
Anna71 [15]

Answer:

Scientific knowledge involves human inference, imagination, and creativity. Despite having an empirical basis of scientific knowledge, it involves scientist's imagination and creativity

8 0
3 years ago
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Which element has 32 protons in its nucleus?
BartSMP [9]

germanium  has 32 protons in its nucleus


3 0
3 years ago
Read 2 more answers
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