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4 years ago

What's 5 type of energy

Chemistry

1 answer:

Law Incorporation [45]4 years ago

8 0

Kinetic Energy.

Potential Energy.

Mechanical Energy.

Chemical Energy.

Thermal Energy.

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The density of copper metal is 8.9 g/mL. What is the volume of 2.5 kg of this metal?

AlekseyPX

Answer:- The volume of copper is 280 mL.

Solution:- Density and mass of copper metal are given and it asks to calculate the volume of it.

Density is directly proportional to mass and inversely proportional to the volume. The density formula is:

$D=\frac{M}{V}$

where D stands for density, M stands for mass and V stands for volume.

Since, the problem asks to calculate the volume, let's rearrange the formula for volume.

$V=\frac{M}{D}$

The given density is 8.9 grams per mL and the mass is 2.5 kg. We need to convert the mass unit from kg to g so that the g unit could be canceled while calculating volume.

The conversion factor is, 1kg = 1000g

$2.5kg(\frac{1000g}{1kg})$

= 2500g

Let's plug in the values in the density formula to calculate the volume.

$\frac{2500g}{\frac{8.9g}{mL}}$

= 280.89 mL

If the sig figs are considered then the answer needs to be round to two sig figs and hence the volume becomes 280 mL.

8 0

4 years ago

larisa [96]

Answer:

group I: alkali metals

group II (beryllium to radium): alkaline earth metals

group II (scandium to zinc , yttrium to cadmium, lanthanoid series to mercury, actinoid series to copernicium): transition metals

group VII (fluorine to astatine): halogens

group VIII: (helium to radon): noble gases

Explanation:

3 0

3 years ago

`What would be the proper way to write the formula for an ionic compound containing carbon and oxygen?

harina [27]

D because Carbon and Oxygen form covalent compounds. I wasn't the greatest at chem., but I'm pretty sure this is correct :D let me know if I gave you the right answer.

6 0

3 years ago

A 1.2 L weather balloon on the ground has a temperature of 25°C and is at atmospheric pressure (1.0 atm). When it rises to an el

icang [17]

Answer:

The temperature of the air at this given elevation will be 53.32425°C

Explanation:

We can calculate the final temperature through the combined gas law. Therefore we will need to know 1 ) The initial volume, 2 ) The initial temperature, 3 ) Initial Pressure, 4 ) Final Volume, 5 ) Final Pressure.

Initial Volume = 1.2 L ; Initial Temperature = 25°C = 298.15 K ; Initial pressure = 1.0 atm ; Final Volume = 1.8 L ; Final pressure = 0.73 atm

We have all the information we need. Now let us substitute into the following formula, and solve for the final temperature ( T $_2$ ),

P $_1$ V $_1$ / T $_1$ = P $_2$ V $_2$ / T $_2$ ,

T $_2$ = P $_2$ V $_2$ T $_1$ / P $_1$ V $_1$ ,

T $_2$ = 0.73 atm $*$ 1.8 L $*$ 298.15 K / 1 atm $*$ 1.2 L = ( 0.73 $*$ 1.8 $*$ 298.15 / 1 $*$ 1.2 ) K = 326.47425 K,

T $_2$ = 326.47425 K = 53.32425 C

7 0

3 years ago

How do we know which elements<br> are more reactive?

Natasha2012 [34]

For metals, reactivity increases down a group and from right to left across a period. Non metals, reactivitt increases up a grouo and from left to right across a period. Francium is the most reactive metal and fluorine is the most reactive non-metal.

5 0

3 years ago

What's 5 type of energy​

What's 5 type of energy