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
shusha [124]
2 years ago
6

Which element, Phosphorus or Calcium, is more reactive? Why?

Chemistry
1 answer:
Elza [17]2 years ago
5 0

Answer:

phosphorus is more reactive than calcium

Explanation:

You might be interested in
What is the approximate mass of one proton?
Len [333]

Answer:

One AMU or 1 Atomic Mass Unit

8 0
3 years ago
Read 2 more answers
Suppose you need to prepare 141.9 mL of a 0.223 M aqueous solution of NaCl. What mass of NaCl do you need to use to make the sol
Afina-wow [57]

Answer:

1.811 g

Explanation:

The computation of the mass need to use to make the solution is shown below:

We know that molarity is

Molarity = \frac{Number\ of\ moles}{Volume\ in\ L}

So,

Number\ of\ moles = Molarity\ \times Volume\ in\ L

= 0.223\times 0.141

= 0.031 moles

Now

Mass = moles \times Molecualr\ weight

where,

The Molecular weight of NaCl is 58.44 g/mole

And, the moles are  0.031 moles

So, the mass of NaCL is

= 0.031 \times 58.44

= 1.811 g

We simply applied the above formulas

3 0
2 years ago
Explain, in terms of particles, what happens when methane boils and why
Ronch [10]

Answer:Butane > ethane > methane, because between bigger molecules there are stronger van der Waals forces and also higher molar mass means they need to be given more energy to have enough kinetic energy to move quickly, freely in gas.

There are multiple butene isomers (Butene) and some (2-Butenes - cis and trans) actually have higher boiling point than n-Butane (there is also Isobutane, of course, with quite much lower boiling point than all of them) and some (1-Butene, Isobutylene) have lower, so this isn't really a fair or simple question. But on simplest level, it can again be said that 1-butene has lower boiling point because it has very similar shape but slightly lower molar mass (2H less) than n-butane.

Explanation:

3 0
2 years ago
Sugar is dissolved in water. Which is the solute? sugar neither both water
lina2011 [118]

Answer:

Sugar

Explanation:

Defintion of a solute-dissolved in the solvent, sugar dissolves in water and is therefore the solute

3 0
3 years ago
Read 2 more answers
How does lanthanide contraction influence the density of period 6 transition element​
Kitty [74]

Answer:

For example, the atomic radius of the metal zirconium, Zr, (a period-5 transition element) is 155 pm (empirical value) and that of hafnium, Hf, (the corresponding period-6 element) is 159 pm. ... The increase in mass and the unchanged radii lead to a steep increase in density from 6.51 to 13.35 g/cm3.

Explanation:

6 0
2 years ago
Other questions:
  • Calculate the mass of oxygen produced from the decomposition of 75.0 g of potassium chlorate?
    14·2 answers
  • If a weak acid is 25% deprotonated at ph 4, what is the pka?if a weak acid is 25% deprotonated at ph 4, what is the pka?
    11·2 answers
  • If the only chemical you can find is labeled with the wrong concentration:_______
    9·1 answer
  • At 100 degrees Celsius, the ion product for pure water is Kw= 51.3*10^-14. What is the pOH of water at this temperature? A) 7.00
    10·1 answer
  • C2H4O2 + NaC2H3O2 + H2O + CO2 list the reactants in this chemical reaction
    13·1 answer
  • In general, as activation energy increases, reaction rate ________. goes down if the reaction is exothermic goes down if the rea
    9·1 answer
  • Please help me I am confused
    13·2 answers
  • 3. What is the mass of 5 moles of Hydrogen sulfate?I
    13·1 answer
  • HELPPPPPPPPPPPP
    10·2 answers
  • What volume of 0.555M KNO3 solution would contain 12.5 g of solute
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!