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
Pie
2 years ago
8

Where did you put H an He? What are your reasoning for placement?

Chemistry
1 answer:
aksik [14]2 years ago
3 0

Answer:

On the placement of hydrogen and helium in the periodic system

H1=1

He2=2

You might be interested in
How do you decide whether an observed property of matter is a physical or a chemical property?
Otrada [13]
By the object's composition and the acting agent to which factors the change of the substance or entity.
<span>The effect of physical property of matter on the object or substance can be better identified when the object doesn't change in composition or in nature. Unlike chemical property which has changed in its composition and atomic structure that was caused by chemical change or reaction due to an agent. Physical property is identified thru physical reactions or changes that has never changed the object in an atomic level, like cutting paper into smaller sizes. The aforementioned example illustrates physical proerty but being cut into smaller buts without changing the object from paper to any other substance, thus, its structure remain and its still called paper regardless of size, mass and texture. <span>
</span></span>
8 0
3 years ago
Read 2 more answers
What is the formula for titanium (I) dichromate?
MaRussiya [10]
The answer is TI(Cr207)2
8 0
2 years ago
The distance between Earth and its moon is 384000000 meters. Express this distance in kilometers.
Andreyy89
384000000m

to change from m to km you just need to divide that give unit in Meters by 1000

which equals,
384000

so,

384000000 meters = 384000 kilometers
3 0
3 years ago
Н
AysviL [449]

Answer:

A 3,3-dimethylhexane

8 0
3 years ago
Calcium reacts with Hydrochloric acid to produce Calcium chloride and
hammer [34]

Answer:

Mass = 2.77 g

Explanation:

Given data:

Mass of HCl = 2 g

Mass of CaCl₂ produced = ?

Solution:

Chemical equation:

2HCl + Ca    →     CaCl₂ + H₂

Number of moles of HCl:

Number of moles = mass / molar mass

Number of moles = 2 g/ 36.5 g/mol

Number of moles = 0.05 mol

now we will compare the moles of HCl with CaCl₂.

                   HCl       :         CaCl₂

                     2         :          1

                   0.05     :       1/2×0.05 = 0.025 mol

Mass of CaCl₂:

Mass = number of moles × molar mass

Mass = 0.025 mol × 110.98 g/mol

Mass = 2.77 g

8 0
3 years ago
Other questions:
  • True or false: Only moving objects have inertia.
    13·2 answers
  • When is a roman numeral most likely needed in the name of an ionic compound?
    9·2 answers
  • Please help me:) thanks!
    12·2 answers
  • 9A. A sample of hydrogen at 1.56 atm had it's pressure decreased to 0.73
    11·1 answer
  • How many moles of KBr are present in 8.96 x 10^21
    6·1 answer
  • Sulfur is to the immediate right of phosphorus in the same row in the periodic table. Which of the following statements compares
    15·1 answer
  • Help!! I need help on these! Please show all work! Will give extra points!
    11·1 answer
  • Someone plz help me write notes (images attached)
    11·1 answer
  • Two 15.Kg objects are placed at four different distances from each other. At which distance would the two objects have the stron
    10·1 answer
  • A blacksmith partners with a team of chemistry and physics graduate students to
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!