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
aleksandrvk [35]
3 years ago
9

What is the SI unit of mass

Chemistry
2 answers:
Alex Ar [27]3 years ago
6 0

Answer: Kilogram (kg)

Explanation: The SI unit of mass is the kilogram (kg). It is equal to the mass of the international prototype of the kilogram and it is defined as the mass of platinum-iridum (Pt-Ir).

FinnZ [79.3K]3 years ago
4 0

Answer:

kg or kilograms

Explanation:

You might be interested in
True or False? Not all compounds will dissolve in water.
In-s [12.5K]

Answer:

False

Explanation:

Polar molecules and ionic compounds dissolve in water, not nonpolar molecules

4 0
3 years ago
What is the density of 1.00 mol of carbon monoxide gas at STP?
Ksju [112]

Answer:

Density = mass / volume.

If this is an ideal gas then 1mol will take up 22.4L of volume (fact about ideal gases you should remember)

Since you have 1mol then you know the volume of the gas that you have (22.4L)

Now, just convert 1mol of CO to grams.The ptable tells you that the mass of 1 mol of C is 12g and the mass of 1 mol of O is 16g. So the mass of 1 mol of CO is......... :):)

Now you have the mass and the volume, so just divide :) enjoy

6 0
2 years ago
"how many moles of calcium atoms are in 2.5 moles of calcium carbonate caco3"
Montano1993 [528]

Answer: -

2.5 moles of calcium atoms are in 2.5 moles of calcium carbonate CaCO₃

Explanation: -

In order to solve such types of problems, the first step would be to write the chemical formula of the compound.

The chemical formula of calcium carbonate = CaCO₃

The chemical symbol of Calcium is Ca.

From the formula of calcium carbonate we can see that

1 mole of CaCO₃ has 1 mole of Ca

2.5 mole of CaCO₃ has \frac{1 mole Ca }{1 mole CaCO₃} x 2.5 mole CaCO₃

= 2.5 mol of Ca.

∴2.5 moles of calcium atoms are in 2.5 moles of calcium carbonate CaCO₃

5 0
3 years ago
20 points - please helpp
Rzqust [24]

Answer:

FeSO₄ + 2NaOH  →  Fe(OH)₂  +  Na₂SO₄

Explanation:

The equation for the reaction is:

FeSO₄ + 2NaOH  →  Fe(OH)₂  +  Na₂SO₄  

Dissociation of each compound

FeSO₄ → Fe²⁺  +  SO₄⁻²

NaOH → Na⁺  +  OH⁻

Fe(OH)₂ →  Fe²⁺  +  2OH⁻

Na₂SO₄ → 2Na⁺  +  SO₄⁻²

5 0
3 years ago
Calculate the theoretical yield if 100.0 g p4o10 react with 200.0 g h2o
Lina20 [59]
The reaction of Phosphorous Pentaoxide with water yield Phosphoric Acid as shown below,

                             P₄O₁₀  +  6 H₂O   →    4 H₃PO₄

According to balance equation,

           283.88 g (1 mole) P₄O₁₀ requires  =  108 g (6 mole) of H₂O
So,
                          100 g P₄O₁₀ will require  =  X g of H₂O

Solving for X,

                        X  =  (100 g × 108 g) ÷ 283.88 g

                        X  =  38.04 g of H₂O

So, 100 g P₄O₁₀ requires 38.04 g of H₂O, while we are provided with 200 g of H₂O which means that water is in excess and P₄O₁₀ is limiting reagent. Therefore, P₄O₁₀ will control the yield of H₃PO₄. So,
As,
           283.88 g (1 mole) P₄O₁₀ produced  =  391.96 g (4 mole) of H₃PO₄
So,
                          100 g P₄O₁₀ will produce  =  X g of H₃PO₄

Solving for X,
                             X  =  (100 g × 391.96 g) ÷ 283.88 g

                             X  =  138.07 g of H₃PO₄

Result:
           
Theoretical Yield of this reaction is 138.07 g.
3 0
3 years ago
Other questions:
  • Models have been created that predict world sea levels will rise if the current global temperature increases continue. If these
    6·1 answer
  • Electron configuration for Bohr model for sodium is
    10·1 answer
  • What are some ideas for a compound machine for my middle school invention science project that can be useful in people's daily l
    11·1 answer
  • Natural gas is stored in a spherical tank at a temperature of 13°C. At a given initial time, the pressure in the tank is 117 kPa
    6·1 answer
  • Explain how tectonic plates move relative to one another at a transform plate boundary
    11·1 answer
  • Which of the following is NOT true about relative dating?
    12·1 answer
  • How does conc.H2SO4 reacts with sugar?​
    8·1 answer
  • را
    11·1 answer
  • If 5.00 g of pure Na2CO3 is treated with HCL solution, how many grams of NaCl will be produced if the water is subsequently evap
    15·1 answer
  • Use the bond energies to answer the question.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!