4 years ago

Do all objects emit electromagnetic waves?

Chemistry

1 answer:

kherson [118]4 years ago

6 0

Answer:

no, not all objects emit electromagnet waves.

Explanation: because lets say the object is carpet it has no magnetic waves in it so not all objects do.

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A mixture is made of two or more materials that A. cannot be separated by any means. B. cannot be separated by physical means. C

jekas [21]

The answer would be option D. can only be seperated by chemical means

5 0

3 years ago

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50.0 mL of a solution of HCl is combined with 100.0 mL of 1.05M NaOH in a calorimeter. The reaction mixture is initially at 22.4

VikaD [51]

Answer:

2.1 M is the molarity of the HCl solution.

Explanation:

$HCl+NaOH\rightarrow H_2O+NaCl$

Molarity of HCl solution = $M_1=?$

Volume of HCl solution = $V_1=50.0mL$

Ionizable hydrogen ions in HCl = $n_1=1$

Molarity of NaOH solution = $M_2=1.05 M$

Volume of NaOH solution = $V_2=100.0 mL$

Ionizable hydroxide ions in NaOH = $n_2=1$

$n_1M_1V_1=n_2M_2V_2$ (neutralization )

$M_1=\frac{M_2V_2}{V_1}=\frac{1.05M\times 100.0 mL}{50.0 mL}$

$M_1=2.1 M$

2.1 M is the molarity of the HCl solution.

3 0

3 years ago

Look at Beaker B below. It shows a cell with 10% salt in a beaker filled with 2% salt. Which direction will water flow in?

Nonamiya [84]

Answer:

Water will flow from beaker to cell

Explanation:

Hopefully this helps!!! :)))

8 0

3 years ago

What is the temperature of 1.485 moles of N₂ gas at a pressure of 1.072 atm and a volume of 20 L?

morpeh [17]

Answer:

178.67K

Explanation:

PV=nRT

T=PV/nR

= 1.072atm*20L/1.485mol*0.0821LatmK^-1

=178.67K

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4 years ago

Fill in the blanks.

vichka [17]

Answer:

Hello There!!

Explanation:

1.C nH 2n

2.Family

3.carbonyl group

4.Catalyst

5.Nickel

hope this helps,have a great day!!

~Pinky~

4 0

3 years ago

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