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Sindrei [870]
3 years ago
12

What is the percent composition of hydrogen in water

Chemistry
1 answer:
pshichka [43]3 years ago
6 0

Answer:

11.19% hydrogen and 88.81% oxygen

Explanation:

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A shiny chunk of metal is found to have a mass of 37.28g. The metal is dropped into a graduated cylinder which contains 20.0 mL
Amanda [17]

Answer: The density of the material is 2.66 g/mL and it is likely this  is made of Aluminum

Explanation:

The first step to know the material of the chunk of metal is to calculate its density. The general formula for density is P (density) = \frac{m (mass)}{ v (volume)}. Moreover, in this case, it is known the mass is 37.28 g, but the volume is not directly provided. However, we know the water in the graduated cylinder had a volume of 20.0 mL and this increased to 34.0 mL when the chunk of metal is added, this means the volume of the metal is 14 mL (34.0 mL - 20.0 mL = 14 mL). Now let's calculate the density:

P = \frac{37.28g}{14.0mL}

P = 2.66 g/mL

This means the density of this metal is 2.66 g/mL, which can be rounded as 2. 7 g/mL, and according to the chart, this is the density of aluminum. Therefore, this material of this chunk is aluminum.

6 0
4 years ago
The only positive ion found in H2SO4(aq) is the
Hitman42 [59]

The answer is ammonium iron

3 0
4 years ago
Does changing the number of neutrons change the identity of the element you have built?
Alina [70]

Answer:<em>if u change the number of neutrons u will .get an isotope of the same element. </em>

Explanation: <em>neutron can make an atom radioactive</em>

5 0
3 years ago
Which two processes of the water cycle absorb energy from the Sun?
Solnce55 [7]

Answer: of Earth's atmosphere occurs as energy, primarily from the sun, causes liquid water to transform to another phase. As this occurs, liquid water absorbs energy, causing it to evaporate and form water vapor. The process of evaporation absorbs tremendous amounts of incoming solar energy.

Explanation:

6 0
3 years ago
How many moles of solute
nydimaria [60]

Answer:

3.4483 ok I googled it

Explanation:

h hhejeje

6 0
4 years ago
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