answer.
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
julia-pushkina [17]
2 years ago
13

Barium sulfate, BaSO4, is a white crystalline solid that is insoluble in water. It is used by doctors to diagnose problems with

the digestive system. Barium hydroxide, Ba(OH)2, is also a white crystalline solid and is used in waste water treatment. How many more oxygen atoms are represented in the formula for barium sulfate than in the formula for barium hydroxide?
Chemistry
1 answer:
pshichka [43]2 years ago
5 0

Answer:2

Explanation:

Ba(OH)2 contains two oxygen atoms

BaSO4 contains four oxygen atoms.

This means that barium sulphate contains two more oxygen atoms than barium hydroxide in its formula. This is clearly seen from the two formulae shown above.

You might be interested in
Solid aluminum metal and diatomic chlorine gas react spontaneously to form a solid product. Give the balanced chemical equation
ValentinkaMS [17]

When solid aluminum metal is reacted with diatomic chlorine gas, solid aluminum chloride is formed. This reaction is an example of synthesis or chemical combination in which two elements, aluminum and chlorine combine to form a new compound aluminum chloride.

Word equation: Aluminum (s)+ Chlorine (g)---> Aluminum chloride(s)

Molecular formula of the product formed is AlCl_{3}.

Therefore the balanced chemical equation representing the reaction of solid aluminum with gaseous dichlorine can be represented as,

2Al(s) + 3Cl_{2}(g)-->2AlCl_{3}(s)

8 0
2 years ago
The heat of vaporization (∆Hvap) of the element mercury (Hg) is 59.0 kJ/mol. If the vapor pressure of Hg is 0.0017 torr at 25°C,
astra-53 [7]

Answer:

Tb Hg = 656.726 K

Explanation:

normal boiling point (Tb):

Clasius-Clapeyron's law:

  • Tb = [(RLn(Po)/ΔHv) + (1/To)]∧(-1)

∴ R = 8.314 J/K.mol

∴To = 25°C ≅ 298 K

∴ Po = 0.0017 torr = 2.24 E-6 atm

∴ ΔHv = 59.0 KJ/mol = 59000 J/mol

⇒ Tb = [(8.314 J/K.mol)Ln(2.24 E-6))/(59000 J/mol)) + (1/298 K)]∧(-1)

⇒ Tb = [- 1.833 E-3 K-1 + 3.355 E-3 K-1 ]∧(-1)

⇒ Tb = [1.523 E-3]∧(-1)

⇒ Tb = 656.726 K

6 0
2 years ago
a square boat made from iron has overall dimensions of 2.00 cm x 11.0 cm x 11.0 cm. it has a mass of 213 g. what is its density
Rus_ich [418]
Volume:

2.00 x 11.0 x 11.0 => 242 cm³

mass : 213 g

D = m / V

D = 213 / 242

D = 0.880 g/cm³

Answer B

hope this helps!
5 0
2 years ago
Read 2 more answers
Calculate the freezing point of a 0.100 m aqueous solution of k2so4, taking interionic attractions into consideration by using t
Leokris [45]
Ionic  salt  dissociate  completely  in  water   particularly in  water at  low  concentration.
 The  molal  freezing point  of  depression constant  for  water is 1.85kg/k/mol
therefore depression  of  freezing  point =1.853  x 0.100  x  2.32=0.429  degrees  celsius
hence  solute  freeze at - 0.429  degree  celsius
3 0
2 years ago
A 0.500 g sample of tin (Sn) is reacted with oxygen to give 0.534 g of product. What is the empirical formula of the oxide?
REY [17]

Answer:

Sn_2O

Explanation:

Hello,

In this case, given that the mass of the product is 0.534 g, we can infer that the percent composition of tin is:

\%Sn=\frac{0.500g}{0.534g}*100\%\\ \\\%Sn=93.6\%

Therefore, the percent composition of oxygen is 6.4% for a 100% in total. Thus, with such percents we compute the moles of each element in the oxide:

n_{Sn}=93.6gSn*\frac{1molSn}{118.8gSn} =0.788molSn\\\\n_O=6.4gO*\frac{1molO}{16gO}=0.4molO

In such a way, for finding the smallest whole number we divide the moles of both tin and oxygen by the moles of oxygen as the smallest moles:

Sn:\frac{0.788}{0.4}=2\\ \\O:\frac{0.4}{0.4}=1

Therefore, the empirical formula is:

Sn_2O

Best regards.

8 0
2 years ago
Other questions:
  • In the preceding information section there is a "bohr's diagram" of an atom. Which atom is it?
    9·1 answer
  • How many grams of calcium must be combined with phosphorus to form one mole of the compound Ca3P2?
    11·1 answer
  • 28 ml of 0.10 m hcl is added to 60 ml of 0.10 m sr(oh)2. determine the concentration of oh− in the resulting solution.
    6·2 answers
  • Write the electronic configurations for mn, mn2+, mn4+, mn6+, and mn7+
    13·1 answer
  • In the example above, imagine that the sunlight, solar cell, and fan form a closed system and no heat is generated. In this situ
    15·2 answers
  • Why is liquid mercury a good electrical conductor in terms of atomic structure?
    8·2 answers
  • A swimmer enters a gloomier world (in one sense) on diving to greater depths. Given that the mean molar absorption coefficient o
    10·1 answer
  • A mercury mirror forms inside a test tube as a result of the thermal decomposition of mercury(ii) oxide: 2 hgo(s) → 2 hg(l) + o2
    8·1 answer
  • Acetone can be easily converted to isopropyl alcohol by addition of hydrogen to the carbon–oxygen double bond. calculate the ent
    10·1 answer
  • During an experiment, an investigator gently abrades the skin from the flank of a mouse, creating a 1 × 2-cm skin window. A glas
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!