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
Fofino [41]
3 years ago
9

Can somebody help me with this please

Chemistry
1 answer:
denpristay [2]3 years ago
3 0

Answer:

He, 2, 2, 2, 4, 4-2=2, 1, 8

I, 53, 53, 53, 127, 127-53= 74, 5, 7

Explanation:

um check the periodic table for the rest?

You might be interested in
What is the pH of a 0.083 solution of HCI
quester [9]

Answer:

The pH is 1.08,  being an acid pH

Explanation:

pH is a parameter used to measure the degree of acidity or alkalinity of a substance. The pH scale ranges from 0 to 14. Values ​​less than 7 indicate the acidity range and those greater than 7 indicate alkalinity or basicity. Value 7 is considered neutral. Mathematically, pH is the negative logarithm of the molar concentration of hydrogen or proton ions (H⁺) or hydronium ions (H₃O⁺).

pH= - log [H⁺]= - log [H₃O⁺]

A strong acid is an acid that completely dissociates into hydrogen ions and anions in solution. This implies that the initial concentration of acid is equal to the final concentration of H₃O⁺. This occurs with acid HCl.

So,  pH is calculated as:

pH= - log (0.083)

pH= 1.08

<u><em>The pH is 1.08,  being an acid pH</em></u>

8 0
3 years ago
Exercise 2:
vagabundo [1.1K]

Answer:

1. KCLO3------>KCL + 3/2O2(g)

2. 122.5g/mol

3. 0.2mol

4. 18.5g

7 0
3 years ago
When a chemical reaction destroys a solid
bogdanovich [222]

Answer:

??? lo siento no hablo espanol

7 0
3 years ago
if one person can clean a house in 5 hours and the second person can clean the same house in 4 hours, how long would will it tak
Anettt [7]
1/5 + 1/4 =1/x

4x + 5x = 20

9x = 20 

x = 2.22 hours  Answer
3 0
3 years ago
Electron configuration for Lithium.
Ira Lisetskai [31]

The answer to problem is [He] 2s1. Hope it helps

4 0
4 years ago
Read 2 more answers
Other questions:
  • How do you convert 3.9mL to hL
    11·1 answer
  • Considering the limiting reactant, what is the mass of iron produced from 80.0 g of iron(II)oxide (71.55 g/mol) and 20.0 g of ma
    11·1 answer
  • What is the definition of physical and chemical changes?
    5·2 answers
  • The density of benzene at 15 °c is 0.8787 g/ml. Calculate the mass of 0.1500 l of benzene at this temperature. Enter your answer
    10·1 answer
  • Which type of reaction involves one element replacing another element in a compound
    11·2 answers
  • Please help me so I can pass this class​
    9·1 answer
  • Match the molecular shapes to the correct Lewis structures
    11·2 answers
  • An atom of carbon contains 6 total electrons. How many of these electrons are in s orbitals?
    14·1 answer
  • A microwave oven emits radiation at a wavelength of 0.500 cm. What is the frequency of this radiation?
    7·1 answer
  • CO2 and H2O are examples of chemical?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!