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iris [78.8K]
3 years ago
10

How is the periodic table useful today?

Chemistry
2 answers:
PSYCHO15rus [73]3 years ago
5 0
Today, the table can be used to predict properties of elements yet to be discovered, although these new elements are all highly radioactive and break down into more familiar elements almost instantly. ... The table tells each element's atomic number and usually its atomic weight.
S_A_V [24]3 years ago
3 0

Answer:

The periodic table is useful today for finding out all the elements that exists on Earth. The elements there can be used to write down chemical formulas, calculate things like molar mass/atomic mass of each element, atomic number for each, number of valence electrons each element has, the oxidation number for each, etc. Lastly, it can be used to predict the properties of elements yet to be discovered.

Explanation:

Hope it helped!

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Two moles of propene (c3h6) gas react with nine moles of oxygen (o2) gas to produce six moles of carbon dioxide gas (co2) and si
dalvyx [7]
The stoichiometry of the reaction gives the molar ratio in which the reactants react with each other and the ratio in which products are formed.
The coefficients of the reactants in the reaction follow the stoichiometry 
the balanced chemical equation for the reaction is as follows;
2C₃H₆(g) + 9O₂(g)  ---> 6CO₂(g) + 6H₂O(l)
7 0
3 years ago
Read 2 more answers
In a mixture of 2 ideal gases, A and B, PA = 0.2PB, what is the mole fraction of A?
Alborosie

Answer:

0.1667

Explanation:

Hello,

Dalton's law defines:

y_i=\frac{P_i}{P_T}

A total pressure is:

P_T=P_A+P_B

So, for A (solving for P_A in the previous equation, we get:

y_A=\frac{P_A}{P_A+P_B}

Since P_A=0.2P_B, we obtain:

y_A=\frac{P_A}{P_A+P_A/0.2}\\y_A=\frac{1}{6}\\y_A=0.1667}

Best regards.

7 0
4 years ago
Easy one! giving brainly if correct​
Dafna1 [17]

Answer: glass is not considered as solute.

Extra's:

A solute is a substance that gets dissolved in a solvent. ... The solutes in air are oxygen, argon, and carbon dioxide gas, as well as water vapour.

Sugar is a solute in the solvent water. Sugar is one of the most soluble solutes in water.

Also solute is a powder that can be dissolved in solvent like water. here baking soda is a solute.

5 0
3 years ago
Carbon dioxide and ____ are outputs of cellular respiration
vova2212 [387]

Answer:

oxygen

Explanation:

plants use oxygen

5 0
3 years ago
How do scientists classify intrusive igneous features? according to shape, texture, and their distance from the nearest volcanic
Nataliya [291]

according to shape, size, and their relationship to surrounding layers of rock

Explanation:

Scientists classify intrusive features according to their shape, size and relationship to surrounding layers of rocks.

Intrusive igneous features are the sills, di/kes, batholith, laccoiith, lopolith e.t.c

  • When magma cools and solidifies within the earth crust, they form intrusive igneous rocks.
  • Intrusive igneous rocks differs from one another in their shape, size and relationship to surrounding rocks.
  • For example, batholith is a large intrusive body that extends for several kilometers in the earth surface.
  • Sills and di/kes are smaller bodies. Sills forms parallel to orientation of rocks in an area. Di/kes are known to cut across the orientation.

Learn more:

Sedimentary rocks brainly.com/question/2740663

#learnwithBrainly

6 0
3 years ago
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