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
juin [17]
2 years ago
5

The sparse area surrounding a spiral galaxy is called its

Chemistry
1 answer:
ale4655 [162]2 years ago
7 0

Answer:

Halo

Explanation:

You might be interested in
have you ever been swimming and noticed some areas in the water are colder and other are warmer? why do you think this happens
timama [110]
Maybe because someone hasn't been swimming on tht side bacause the water changes it's tempurture from your body heat or maybe because it isnt any sun out

6 0
3 years ago
3. Where are gastropods found? Choose all the correct answers.
dalvyx [7]
D.

Gastropods live in every conceivable habitat
4 0
3 years ago
Read 2 more answers
The fact that HBO2, a reactive compound, was produced rather than the relatively inert B2O3 was a factor in the discontinuation
Reil [10]

Answer:

1027.62 g

Explanation:

For B_2H_6  :-

Mass of B_2H_6  = 296.1 g

Molar mass of B_2H_6  = 27.66 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{296.1\ g}{27.66\ g/mol}

Moles\ of\ B_2H_6= 10.705\ mol

From the balanced reaction:-

B_2H_6(g) + 3 O2_{(l)}\rightarrow 2 HBO_2_{(g)}+ 2 H_2O_{(l)}

1 mole of B_2H_6 react with 3 moles of oxygen

Thus,

10.705 mole of B_2H_6 react with 3*10.705 moles of oxygen

Moles of oxygen = 32.115 moles

Molar mass of oxygen gas = 31.998 g/mol

<u>Mass = Moles * Molar mass = 32.115 * 31.998 g = 1027.62 g</u>

8 0
3 years ago
For which structure(s) does the electron-bearing carbon atom have a formal charge of zero
AlladinOne [14]

Formal charge can be calculated from the following formula

Formal charge = valency of central atom - (number of lone pair of electrons + number of covalent bonds)

a) for methylene:

Formal charge = 4 -( 2+ 2) = 0

b) For methyl free radical

Formal charge = 4- (3 +1) = 0

6 0
3 years ago
A. How many moles of H2 are produced from two<br> moles of CH4 ?
Nina [5.8K]
Every mole of CH4 used, three moles of H2 are produced, so 2 moles of CH4, would be 6 moles of H2 produced
8 0
3 years ago
Other questions:
  • According to the pH chart, which is the strongest base?
    11·2 answers
  • Which element is oxidized in the reaction below? fe(co)5 (l) + 2hi (g) → fe(co)4i2 (s) + co (g) + h2 (g)
    7·1 answer
  • Which of the following is a base? <br> AgO <br> Ca(OH)2 <br> HF <br> NaCl
    11·2 answers
  • The standard cell potential, E°cell, for a reaction in which two electrons are transferred between the reactants is +1.33 V. Cal
    7·1 answer
  • An industrial vat contains 650 grams of solid lead(II) chloride formed from a reaction of 870 grams of lead(II) nitrate with exc
    9·2 answers
  • When the [H+] in a solution is 1.7 × 10−9 M, what is the pOH
    6·2 answers
  • What is the symbol for the most common isotope of tin
    9·2 answers
  • Reptiles, amphibians, and fish are all cold-blooded animals. Their body temperatures are determined by their surroundings. How d
    11·1 answer
  • 3Mg(OH), + 2АІСІ,<br> 3MgCI,<br> +<br> 2Al(OH),<br> I need this asap
    15·1 answer
  • A calorimeter contains 72.0 g of water at 19.2 oC. A 141 g piece of metal is heated to 89.0 oC and dropped into the water. The e
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!