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
AnnyKZ [126]
3 years ago
9

can Someone please do this for me i did like one but i dont understand the rest please please please i beg i need it for tommoro

w please

Chemistry
1 answer:
kobusy [5.1K]3 years ago
5 0
How do you solve x = 4 + 9x
You might be interested in
How many valence electrons are in oxygen?
Sunny_sXe [5.5K]
 i think it is 6 valence electrons 
5 0
3 years ago
How do you make a model of something you cannot see?
Vedmedyk [2.9K]
You have to imagine it
8 0
3 years ago
Read 2 more answers
How many liters of water can be made from 55 grams of oxygen gas and an excess of hydrogen at a pressure of 12.4 atm and a tempe
polet [3.4K]
First, we need the no.of moles of O2 = mass/molar mass of O2
                                                             = 55 g / 32 g/mol
                                                             = 1.72 mol
from the balanced equation of the reaction:
2H2 (g) + O2(g) → 2H2O(g)
we can see that the molar ratio between O2: H2O = 1: 2 
So we can get the no.of moles of H2O = 2 * moles of O2
                                                                  = 2 * 1.72 mol
                                                                  = 3.44 mol
So by substitution by this value in ideal gas formula:
PV = nRT

when P = 12.4 atm  & n H2O = 3.44 mol & R= 0.0821 & T = 85 + 273=358K

12.4 atm *V = 3.44 * 0.0821 * 358 = 8.15 L
 ∴ V ≈ 8.2 L 
4 0
4 years ago
The alkali earth metal beryllium (Be) engages in a chemical reaction and loses all of its valence electrons.
denpristay [2]

The loss of electron from an results in the formation of cation represented by the positive charge on the element whereas gaining of electron results in the formation of anion represented by the negative charge on the element.

The alkali earth metal beryllium (Be) belongs to the second group of the periodic table. The ground state electronic configuration of Be is:1s^{2}2s^{2}

From the electronic configuration it is clear that it has 2 valence electrons in its valence shell (2s^{2}).

After losing all valence electrons that is 2 electrons from 2s orbital. The electronic configuration will be:

1s^{2}2s^{0}

Since, lose of electron is represented by positive charge on the element symbol. So, the beryllium will have +2 charge on its symbol as Be^{2+}.

Hence, beryllium will have 2+ charge on it after losing all its valence electrons in the chemical reaction.

6 0
3 years ago
Read 2 more answers
In your own words, explain the periodic law.
mote1985 [20]

    States that the properties of elements are periodic or recurring and are correlated to their atomic number.

6 0
3 years ago
Other questions:
  • Which elements forms an ion with a 1– charge?
    10·1 answer
  • Please help me i keep getting this wrong :(
    11·1 answer
  • A substance registers a temperature change from 20 to 40 to what incremental temperature change does this correspond
    12·1 answer
  • What is the maximum number of electrons that can go into each of the following sublevels?. a. 2s- . b. 4s- . c. 4p- . d. 4f- . e
    13·1 answer
  • Determine the net iconic equation for the following chemical reaction: HCl(aq) + NH4OH(aq)———-> NH4Cl(aq) + H2O(I) Hint: HCl(
    12·1 answer
  • Which of the following gases is the most abundant in a volcanic eruption?
    8·2 answers
  • State briefly the similarities and differences between the theories of Arrhenius and Bronsted-Lowry
    14·1 answer
  • You are managing a city that needs to upgrade its disinfection basin at your 40 MGD surface water drinking water treatment plant
    11·1 answer
  • What is an adaptive organ of duck​
    9·2 answers
  • 3 Apply Use context clues to write your own definitions for the words definite and occupy.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!