1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
spayn [35]
3 years ago
9

Chemists use the periodic table to organize the elements. What are some ways in which this organization is useful? Select all th

at apply.
here options


A. It groups elements that have similar properties.


B. It identifies which elements are most common and which are rare.


C. It allows scientists to predict how a particular element will interact with others.


D. It arranges elements in order of usefulness for human activities.

HELP ME PLZ!!!!!!!!!
Chemistry
2 answers:
max2010maxim [7]3 years ago
7 0

Answer: Another useful feature of the periodic table is that most tables provide all the information you need to balance chemical reactions at a glance. The table tells each element's atomic number and usually its atomic weight. The typical charge of an element is indicated by its group.

Explanation:

KIM [24]3 years ago
7 0
And answer here little man is B
You might be interested in
What is the difference between a mixture, a solution, and a pure substance?
vichka [17]
A mixture is a compound of two or more substances a pure substance is only made of one kind of atom and a solution is composed of a liquid substance made of two or more types of atoms
4 0
3 years ago
Read 2 more answers
How many calories are required to convert 17 g of ice at 0.0°C to liquid water at 32.0°C? The heat of fusion of water is 80. c
Mazyrski [523]

Answer : The heat required is, 1904 calories.

Explanation :

The process involved in this problem are :

(1):H_2O(s)(0^oC)\rightarrow H_2O(l)(0^oC)\\\\(2):H_2O(l)(0^oC)\rightarrow H_2O(l)(32.0^oC)

The expression used will be:

\Delta H=m\times \Delta H_{fusion}+[m\times c_{p,l}\times (T_{final}-T_{initial})]

where,

m = mass of ice = 17 g

c_{p,l} = specific heat of liquid water = 1cal/g^oC

\Delta H_{fusion} = enthalpy change for fusion = 80.0cal/g

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

\Delta H=17g\times 80.0cal/g+[17g\times 1cal/g^oC\times (32.0-0)^oC]

\Delta H=1904cal

Therefore, the heat required is, 1904 calories.

3 0
4 years ago
Help plz this is part b to my last question​
Elden [556K]

Answer:

% error Aluminum: 0.34%

% error Steel: 16.67%

% error Lead: 23.08%

Explanation: Given our observed values of specific heat, to find the % error, we must know the true values as well. % error can be defined as, % error = |observed value - true value | / true value.

Our given data to solve this problem is as follows:

Aluminum Specific Heat Observed Value: 0.9 (given), Aluminum Specific Heat True Value: 0.897 (research).

Steel Specific Heat Observed Value: 0.49 (given), Steel Specific Heat True Value: 0.42 (research).

Lead Specific Heat Observed Value: 0.16 (given), Lead Specific Heat True Value: 0.13 (research).

___________

Since we have all the information, just subtract the true value from the observed value, and divide by the true value.

Aluminum Specific Heat % error:

observed value - true value / true value →

0.9 - 0.897 / 0.897 = 0.003 / 0.897 = 1/299 ≈ 0.34 %

Steel Specific Heat % error:

observed value - true value / true value →

0.49 - 0.42 / 0.42 = 0.07 / 0.42 = 1/6 ≈ 16.67%

Lead Specific Heat % error:

observed value - true value / true value →

0.16 - 0.13 / 0.13 = 0.03 / 0.13 = 3/13 ≈ 23.08%

3 0
3 years ago
At 850K, 65L of gas has a pressure of 450kPa. What is the volume (in liters) if the gas is cooled to 430K and the pressure decre
Novosadov [1.4K]

Answer:

V₂ =  45.53 L

Explanation:

Given data:

Initial temperature = 850 K

Initial volume = 65 L

Initial pressure = 450 KPa

Final temperature = 430 K

Final pressure = 325 KPa

Final volume = ?

Solution:

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 450 KPa× 65 L × 430 K / 850 K × 325KPa  

V₂ = 12577500 KPa .L. K / 276250 K. KPa

V₂ =  45.53 L

8 0
3 years ago
How do I revise for a science test due tomorrow? I haven’t revised but I have to get a good score. Anyone please help!
Komok [63]

Answer:

in my opinion find some stuff to help u with it test if you are aloud to bring in a revision boom into your test and get a good night sleep if you can and try not to get stressed about it

7 0
3 years ago
Other questions:
  • If 34.5 g of Copper reacts with 70.2 g of silver nitrate, according to the following
    5·2 answers
  • Help ASAP please urgent
    6·1 answer
  • In which direction does heat energy move? (2 points)
    5·2 answers
  • Geologists obtain indirect evidence about Earth’s interior by a. measuring pressure differences at Earth’s surface. b. estimatin
    12·2 answers
  • study figure 10-3. how much nitrogen-14 will be produced from a 200-g sample of carbon 14 after 17,190 years
    5·1 answer
  • 3. The molar volume of a gas at STP occupies<br> 0 1 kilopascal<br> O ooc<br> 12 grams<br> 22.4 L
    14·1 answer
  • Conservation of Energy is the principle stating…
    8·2 answers
  • Which pattern in electronegativity do elements in the periodic table display?
    13·1 answer
  • A 4M solution means there are
    9·1 answer
  • What mass of oxygen is needed to burn 4g of hydrogen, given the equation below
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!