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NARA [144]
4 years ago
10

A substance is melting, so it is transitioning from solid to liquid. What kind of change is this?

Chemistry
2 answers:
Nostrana [21]4 years ago
8 0

Answer:

chemical or physical i dont know for sure i kniw i have learned this juat cant rember

rewona [7]4 years ago
5 0

Answer:

Your answer will be: <u><em>Physical</em></u>

Explanation:

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To fight a bacterial infection, a patient was given an antibiotic to take for 10 days.
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Answer: B

Explanation: trust me

8 0
3 years ago
Sodium and chlorine react to form sodium chloride. If there are 1.4 moles of sodium used, how many moles of chlorine were requir
sammy [17]

Answer:

0.7 moles of Chlorine gas is required.

Explanation:

The reaction is balanced as follows:

2Na + Cl_{2} ------>  2NaCl

According to stoichiometry,

2 mole Sodium reacts with 1 mole Chlorine gas

∴1 mole Sodium reacts with 1/2 moles of Chlorine gas

∴1.4 mole sodium reacts with 1.4/2 moles of Chlorine gas

                                                = 0.7 moles of Chlorine gas

So, 0.7 moles of Chlorine gas is required.

3 0
3 years ago
Consider the following equilibrium:H2CO3(aq) + H2O(l) H3O+(aq) + HCO3-1(aq).What is the correct equilibrium expression?
Vanyuwa [196]

The equilibrium expression shows the ratio between products and reactants. This expression is equal to the concentration of the products raised to its coefficient divided by the concentration of the reactants raised to its coefficient. The correct equilibrium expression for the given reaction is:<span>

<span>H2CO3(aq) + H2O(l) = H3O+(aq) + HCO3-1(aq)

Kc = [HCO3-1] [H3O+] / [H2O] [H2CO3]</span></span>

4 0
3 years ago
Where is the Center of the Universe?
Alex17521 [72]

Everywhere

Hope that helps and good luck

~May

8 0
3 years ago
Read 2 more answers
I need help ASAP!!!
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Answer:

cells; energy

Explanation:

3 0
4 years ago
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