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
Ludmilka [50]
3 years ago
7

Express each of the following in standard form.

Chemistry
1 answer:
swat323 years ago
3 0

Answer:3.6 x 101 or 8.77 x 10-1

You might be interested in
For the following reaction, 5.04 grams of nitrogen gas are allowed to react with 8.98 grams of oxygen gas: nitrogen(g) + oxygen(
OLga [1]

Answer:

1. 10.8 g of NO

2. N₂ is the limting reagent

3. 3.2 g of O₂ does not react

Explanation:

We determine the reaction: N₂(g) + O₂(g) →  2NO(g)

We need to determine the limiting reactant, but first we need the moles of each:

5.04 g / 29 g/mol = 0.180 moles N₂

8.98 g / 32 g/mol = 0.280 moles O₂

Ratio is 1:1, so the limiting reactant is the N₂. For 0.280 moles of O₂ I need the same amount, but I only have 0.180 moles of N₂

Ratio is 1:2. 1 mol of N₂ can produce 2 moles of NO

Then, 0.180 moles of N₂ may produce (0.180 .2) / 1 =  0.360 moles NO

If we convert them to mass → 0.360 mol . 30 g/1 mol = 10.8 g

As ratio is 1:1, for 0.180 moles of N₂, I need 0.180 moles of O₂.

As I have 0.280 moles of O₂, (0.280 - 0.180 ) = 0.100 moles does not react.

0.1 moles . 32 g/mol = 3.2 g of O₂ remains after the reaction is complete.

8 0
3 years ago
Read 2 more answers
A scientist observed a 5-mL sample of an unknown substance. It is a blue liquid with a density of 1.2 g/cm. the substance reacts
LenaWriter [7]
Characteristic properties can be used to describe and identify the substances, while non-characteristic properties, although can be used to describe the substances, cannot be used to identify them.

Temperature, mass, color, shape and volume are examples of non-characteristic properties.

Density, boiling point, melting point, chemical reactivity are examples of characteristic properties.

List of the properties observed by the scientist:
-----------------------------------------------------------------
Property                                     Type of property
----------------------------------------------------------------
Volume: 5 ml                              non-characteristic
----------------------------------------------------------------
Color: blue                                 non-characteristic
----------------------------------------------------------------
State: liquid                                characteristic
------------------------------------------------------------
density: 1.2 g/cm                        characteristic
------------------------------------------------------------
Reaction: reacts with CO2         characteristic
----------------------------------------------------------
5 0
3 years ago
10. Copper(i) bromide reacts with magnesium metal: 2 CuBr + Mg → 2 Cu + MgBrz
velikii [3]

Answer:

72.6 grams

Explanation:

I got this answer through stoichiometry.  For every 1 mole of Mg, 2 moles of CuBr are consumed.  Because of this, multiply the moles of Mg by 2.  Then, convert moles to grams.

5 0
2 years ago
Read 2 more answers
27 g of Al will react with how much mass of O2 to produce Al2O3
snow_tiger [21]
24g 4Al+3O2=2Al2O3
27g x(g)
108 96
X=24g
5 0
3 years ago
If the electronnegavity difference between elements A and X is 0.8, the bond in AX will most likely be what?
siniylev [52]

Answer:

Polar covalent bond

Explanation:

When the electronegativity difference between two elements A and X is 0.8, the bond AX formed will most likely be a polar covalent bond.

A polar covalent bond is one whose electronegativity difference is between 0.5 and 2.1.

In such a bond type, we have heteronuclear species with one of the species having a higher electronegativity value.

  • When electronegativity difference is less than 0.5, a non-polar covalent bond forms.
  • If the value is greater than 2.1, an ionic bond will form.
8 0
3 years ago
Other questions:
  • Photosynthesis can be represented by 6CO2(g)+6H2O(l)⇌C6H12O6(s)+6O2(g) Which of the following will be false when the photosynthe
    8·2 answers
  • The following observations are made about two hypothetical elements A and B: The A?A and B?Bbond lengths in elemental A and B ar
    6·1 answer
  • Explain how heat would change the density of a parcel of air
    12·1 answer
  • Given the balanced equation representing a reaction:
    14·1 answer
  • If a reaction has an equilibrium constant slightly greater than 1, what type of reaction is it?
    15·2 answers
  • What volume in mL of a 2.9M solution is needed in order to prepare 2.3L of a 1.1M solution?
    10·2 answers
  • What is a physical property of toothpaste
    7·2 answers
  • What is an energy conserved system ?
    12·1 answer
  • What can you tell about the location of the Sun from this illustration of the Milky Way? A) It is outside of the Milky Way. B) I
    15·1 answer
  • Why do we have to be careful in handling flammable materials?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!