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
frutty [35]
3 years ago
11

Which is the correct chemical formula for hydrogen gas?

Chemistry
1 answer:
kodGreya [7K]3 years ago
7 0
The correct formula for hydrogen gas is H2
You might be interested in
just help me with 2a) but if you have a lot of time you can just give me answer for all of it so i can check my answer , thank y
stepladder [879]

Answer:

The reaction forming aluminum bromide is Al + 3Br2 → 2AlBr3

6 0
3 years ago
Nonmetal oxides can react with water to form acids. For example, carbon dioxide reacts with water to form carbonic acid: CO2 H2O
mario62 [17]

Answer:

Explanation:

Diiodine pentoxide is I₂O₅

Reaction with water

I₂O₅ + H₂O = 2HIO₃

2 )   HIO₃  is called iodic acid.

6 0
3 years ago
Properties of a substance which can be measured or observed without altering the identity of the substance being measured are __
rosijanka [135]

Answer:

The correct answer is physical properties and/or phase properties.

Explanation:

Chemical properties can alter the substance (if you burn wood, it becomes ash and is no longer wood).

Reactive properties are also chemically changing the substance.

Phase properties are where the element can be in solid, liquid, or gas form so these could also be an answer.

8 0
3 years ago
The block in this illustration is floating in water, which has a density of 1.00 g/cm3 .What is a good estimate of the density o
miss Akunina [59]

Answer : The density of the block is estimated to be, 0.30g/cm^3.

Explanation :

Density of the water, \rho_w=1.0 g/cm^3

As we know that,

Buoyant force = \rho\times volume\times g

where,

g = gravitational acceleration

volume of the block = v

density of the block = \rho_o

Weight of the Block = Buoyant force exerted by water

\rho_o\times v\times g=\rho_w\times 30\%\text{ of volume of block}\times g

\rho_o\times v\times g=\rho_w\times 0.30v\times g

\rho_o\times v\times 9.8 m/s^2=1 g/cm^3\times 0.30v\times 9.8 m/s^2

\rho_o=0.30 g/cm^3

Thus, the density of the block is estimated to be, 0.30g/cm^3.

6 0
3 years ago
What pressure is required to compress 200 liters of air at 100 atmosphere into a
nikitadnepr [17]

Answer:

P₂ = 1000 atm

Explanation:

Given data:

Initial volume of air = 200 L

Initial pressure = 100 atm

Final volume = 20.0 L

Final pressure required = ?

Solution:

The given problem will be solved through the Boly's law,

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

100 atm × 200 L= P₂  × 20.0 L

P₂ = 20,000 atm. L/ 20.0 L

P₂ = 1000 atm

8 0
3 years ago
Other questions:
  • Classify the following items based on the type of polymer they are made from: raincoats and leather shoes.
    9·1 answer
  • Poly(lactic acid) (PLA) has received much recent attention because the lactic acid monomer [CH3CH(OH)COOH] from which it is made
    12·1 answer
  • How much acceleration does a 10 kg object have if pushed by a 75 N force?
    15·1 answer
  • A student dissolves 4.5 g of sodium chloride (NaCl) into 75 g of water (H2O). Which of the following statements is correct regar
    11·2 answers
  • Is the formation of NaCL and other compound a physical or chemical change?
    10·1 answer
  • The what and what properties of a substance affect how substances in a mixture seperate
    8·1 answer
  • The law of conservation of energy states that energy cannot be created or
    5·1 answer
  • Determine the number of representative particles in each of the following:
    8·1 answer
  • The process that makes ice cubes shrink as they sit in a freezer is called.
    13·1 answer
  • How many grams of ice will melt when 4520 J of heat are absorbed?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!