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Drupady [299]
4 years ago
15

Why is crushed ice used for snow cones?

Chemistry
1 answer:
aleksandrvk [35]4 years ago
4 0
<span>Increasing the surface area helps dissolve more flavoring</span>
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Four properties of water are listed. It reacts with halogens to form oxygen gas as one of the products. It is transparent and ta
Luda [366]

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1 and 4 took the test

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"suggest a simple solution to this problem that does not involve the use of timestamps and show how would your solution solve th
kirill [66]
I'm not sure i need more information.

8 0
3 years ago
Calculate the number of formula units in 1.87 mol of NH4Cl
nydimaria [60]

Answer:

1.13 x 10²⁴formula units

Explanation:

Given parameters:

Number of moles of NH₄Cl = 1.87mol

Unknown:

Number of formula units = ?

Solution:

From mole concept;

     1 mole of a substance contains 6.02 x 10²³ formula units

Now;

    1.87 moles of  NH₄Cl   1.87 x 6.02 x 10²³ = 1.13 x 10²⁴formula units

4 0
3 years ago
Calculate [H3O+] and [OH−] for each of the following solutions at 25 ∘C given the pH.<br> pH= 2.89
dimaraw [331]

Answer: The value of [H_{3}O^{+}] is 0.0012 M and [OH^{-}] is 1.02 \times 10^{-14}.

Explanation:

pH is the negative logarithm of concentration of hydrogen ion.

It is given that pH is 2.89. So, the value of concentration of hydrogen ions is calculated as follows.

pH = - log [H^{+}]\\2.89 = - log [H^{+}]\\conc. H^{+} = 0.0012 M

The relation between pH and pOH value is as follows.

pH + pOH = 14

0.0012 + pOH = 14

pOH = 14 - 0.0012 = 13.99

Now, pOH is the negative logarithm of concentration of hydroxide ions.

Hence, [OH^{-}] is calculated as follows.

pOH = - log [OH^{-}]\\13.99 = - log [OH^{-}]\\conc. OH^{-} = 1.02 \times 10^{-14} M

Thus, we can conclude that the value of [H_{3}O^{+}] is 0.0012 M and [OH^{-}] is 1.02 \times 10^{-14}.

6 0
3 years ago
Based on the enthalpy changes given for the reactions, which reactions are endothermic? (check all that apply)
7nadin3 [17]
In an endothermic reaction, “delta H” is always positive, since the system is absorbing heat from its surroundings, not releasing into the surroundings like in an exothermic reaction where the delta H is always negative.

So our endothermic reactions would be the first (484kJ) and the last (92kJ).
4 0
4 years ago
Read 2 more answers
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