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
Snowcat [4.5K]
3 years ago
5

How are elements arranged in the periodic table? By number or by mass?

Chemistry
2 answers:
VMariaS [17]3 years ago
8 0

Answer:

By atmoic numbers........

myrzilka [38]3 years ago
8 0

the awncers would be numbers

You might be interested in
In naming the compound PCl5, the prefix used with the second element is ____________________.
Oksanka [162]

Answer:

\boxed {\boxed {\sf Hepta}}

Explanation:

We are given the formula:

PCl_5

This is a molecular formula, because it contains nonmetals.

1. Name the first element

The first element is phosphorous (P). Since this is the first element and there is only one, we don't need a prefix.

  • Phosphorous

2. Second element

The second element is chlorine (Cl). It has a subscript of 5, so we must add the prefix of <u>hepta</u>-.

  • Phosphorous heptachlorine

Add the ending of -ide.

  • Phosphorous heptachloride

The prefix used for the second element is hepta. The compound name is phosphorous heptachloride.

6 0
2 years ago
The mass of .10 moles of iron is:
Stels [109]

Answer:

<em>so mass in gram=560grams</em>

Explanation:

number of moles=10moles

molar mass=56grams/moles

mass in gram of Fe=?

as we know that

number of moles=\frac{mass in gram}{molar mass}

<em>evaluating the formula</em>

<em>number of moles×molar mass=mass in gram</em>

<em>mass in gram=10moles×56grams/moles</em>

<em>mass in gram=560grams</em>

<em>i hope this will help you :)</em>

8 0
3 years ago
Read 2 more answers
What is kinetic energy and Thermal energy
adelina 88 [10]

Answer:Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object. As thermal energy comes from moving particles, it is a form of kinetic energy

Explanation:

7 0
3 years ago
Read 2 more answers
CalcuLate the velocity of an electron ejected if 300.0 mm of light is applied to the surface. A wavelength of 795 nm has suffici
worty [1.4K]
The equation relating velocity and wavelength is written below:

v = λf
where λ is the wavelength in m while f is frequency in 1/s.

Let's determine first the frequency from the speed of light:
c = distance/time, where c is the speed of light equal to 3×10⁸ m/s
3×10⁸ m/s = (300 mm)(1 m/1000 mm)/ time
time = 1×10⁻⁹ seconds
Since f = 1/t,
f = 1/1×10⁻⁹ seconds = 10⁹ s⁻¹

Thus,
v = (795×10⁻⁹ m)(10⁹ s⁻¹)
v = 795 m/s
8 0
3 years ago
What is the temperature (in K) of a sample of nitrogen with an root-
Elena-2011 [213]

Answer:

99munano to papi alb mijaaaaa

3 0
2 years ago
Other questions:
  • What is the molarity of a stock solution if 60 mL were used to make 150 mL of a .5M solution
    14·1 answer
  • Explain mitosis and meiosis in your own words.
    6·1 answer
  • Describe a polyhydroxyl alcohol.
    13·1 answer
  • Which of the following is an important application of hydrogen bonding
    6·2 answers
  • Using complete sentences, explain how to predict the products and balance the reaction for the combustion of butane,
    10·2 answers
  • Which instrument is used to observe space system from Earth?
    13·2 answers
  • The following balanced equation shows the formation of water.
    14·2 answers
  • Two categories based on a medium. "Hint" needs assistance
    8·1 answer
  • Will give brainliest
    9·1 answer
  • Helpppppppppppppppppppppppppppppppppp
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!