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vichka [17]
4 years ago
12

Describe dmitri mendleev 's periodic table ​

Chemistry
1 answer:
ELEN [110]4 years ago
8 0

Answer:

He noted that repeating patterns of behavior could be seen in the way elements combined with each other. He included holes in his table and predicted their properties. He is recognized as the father of the modern periodic table.**Hope it was right. And that it helped!**

Explanation:

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What is the potential energy of a 2 kg rock sitting at the top of a 10 meter high cliff?
Katyanochek1 [597]

Answer:

im sorry im bored can we talk

Explanation:

lol

8 0
3 years ago
A certain flexible weather balloon contains 7.4 L of helium gas. Initially, the balloon is in WP at 8500ft, where the temperatur
Free_Kalibri [48]
<h2>The new volume of the balloon at the top of Pikes Peak is 10.2 L</h2>

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 577.0 torr

P_2 = final pressure of gas = 400 torr

V_1 = initial volume of gas = 7.4 L

V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 20.6^oC=273+20.6=293.6K

T_2 = final temperature of gas = 7.5^oC=273+7.5=280.5K

Now put all the given values in the above equation, we get:

\frac{577.0\times 7.4}{293.6K}=\frac{400.0\times V_2}{280.5K}

V_2=10.2L

Thus the new volume of the balloon at the top of Pikes Peak is 10.2 L

Learn more about combined gas law

brainly.com/question/12089296

brainly.com/question/4133756

3 0
3 years ago
How do I go from molecules to moles? For example 1.50e23 molecules NH3 how many moles are in this problem?
maxonik [38]
To go from molecules to moles divide by Avogadro's number [<span>6.02x10^23]</span>
Example:
1.50x10^23 divided by 6.02x10^23 = 0.249 moles rounded to three significant figures
4 0
3 years ago
How does salt help melt the road?​
QveST [7]

Lower the melting point

Explanation:

Salts helps to melt road by lowering the melting point. It acts as an impurity and generally, impurities low the melting point of substances.

Salts are used as an antifreeze.

  • Water freezes at 0°C and forms ice/snow which can impede human and vehicular movement.
  • When salt is added, it causes the depression of the freezing point by lowering it further.
  • The freezing point is pegged back at -6°C.
  • This way it takes more low temperature to freeze the water.
  • The salt acts as an impurity and causes the depression of melting point and widening of the melting range.

learn more:

Matter brainly.com/question/10972073

#learnwithBrainly

8 0
4 years ago
Read 2 more answers
An airplane attempting to fly higher than 300,000 feet will
Helen [10]

Answer:

Begin to succumb to the power of gravity because of the decrease in lift

Explanation:

7 0
3 years ago
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