Ask question

Ask question

All categories

3 years ago

10

Write an essay (10 lines) about "What is Energy?" How many types of Energy do you know? and which are the types of Energy most u

sed in the world?

1 answer:

AnnZ [28]3 years ago

4 0

I think the most used types of energy used around the world is electrical

You might be interested in

A solution of rubbing alcohol is 78.5 % (v/v isopropanol in water. how many milliliters of isopropanol are in a 90.8 ml sample o

poizon [28]

.785 x 90.8mL = 71.3 mL

4 0

3 years ago

for the reaction HCI+NaOH➡️NaCi+H2O, how many moles of hydrochloric acid are required to produce 150 g. of water?

Ne4ueva [31]

Answer: 8.33 mol of HCl (Hydrochloric Acid)

Explanation:

150 g H2O x __1 mol__ x __1 mol HCl__ = 8.33 mol of HCl

18.016 g 1 mol H2O

6 0

3 years ago

the chemical compound C2F4 is used to make PTEE (Teflon). How manyC2F4 molecules are in 485 kilograms of this material?

monitta

Answer:

$molecules=2.92x10^{27}moleculesC_2F_4$

Explanation:

Hello,

In this case, we use the Avogadro's number to compute the molecules of C2F4 whose molar mass is 100 g/mol contained in a 485-kg sample as shown below:

$molecules=485kgC_2F_4*\frac{1000gC_2F_4}{1kgC_2F_4} *\frac{1molC_2F_4}{100gC_2F_4}*\frac{6.022x10^{23}molecules C_2F_4}{1molC_2F_4} \\\\molecules=2.92x10^{27}moleculesC_2F_4$

Best regards,

5 0

3 years ago

Scientist can use the of minerals to tell them apart A.sound B.length C.size D.color

ipn [44]

Answer:

color

Explanation:

Scientists can use the color of minerals to tell them apart.

7 0

3 years ago

11. Power can be defined as (2 points)

Ierofanga [76]

Answer:

the energy required to do work

4 0

3 years ago