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Trava [24]
4 years ago
15

How many grams are there in 1.45 kg?

Chemistry
2 answers:
Helen [10]4 years ago
8 0

Answer:

1.45 kg

Explanation:

common sense ok

Nezavi [6.7K]4 years ago
3 0

Answer:

1450 grams are in 1.45 kilograms

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Which of the following equations is balanced?
Verizon [17]

answer is B

because both sides have equal numbers of atomos

7 0
4 years ago
When substances form liquid solutions, what two factors are involved in determining the solubility of the solute in the solvent?
liraira [26]

Answer:The tendency toward randomness drives the solution process. & The new solvent-solute intermolecular attractions must about the same as the solvent-solvent and solute-solute attractions.

Explanation:

Increase in entropy is a major driving force in chemistry. The dissolution of particles in solvent increases the entropy of the solution hence is a driving force and an important factor that influences solubility. Secondly, the degree of solute-solvent interaction must be approximately the same as that of solute-solute and solvent-solvent interaction since like dissolves like and dissolution of a solute in a solvent depends on intermolecular interaction between solute and solvent.

4 0
4 years ago
Use the following balanced equation to answer the question below: 2C₇H₁₄+21O₂→14CO₂+ 14H₂O
Ivanshal [37]

Answer:

The answer to your question is: 516 g of water

Explanation:

                          2  C₇H₁₄  +      21  O₂       →  14  CO₂   +   14   H₂O

                          8 moles     43 moles    

Process

1.- Find the limiting reactant

Ratio theoretical   O₂ / C₇H₁₄ = 21 / 2 = 10.5

Ratio experimental  O₂ / C₇H₁₄   = 43 / 8 = 5.3

As the ratio diminishes the limiting reactant is O₂.    

2.- Calculate the moles of water

                            21 moles of O₂  -------------  14 moles of water

                             43 moles of O₂ ------------    x

                             x = (43 x 14) / 21

                             x = 28.67 moles of water

3.- Calculate the grams of water

Molecular mass of water= 18g

                             18 g ------------------------ 1 mol of water

                              x     ------------------------  28.67 moles of water

                             x = (28.67 x 18) / 1

                             x = 516 g of water

                       

3 0
3 years ago
A solution is prepared by dissolving 30.05 g of ammonium dichromate in water and diluting it to 500 mL. What is the molarity of
Oksana_A [137]

Answer:

Molarity(M) = 0.24M in (NH₄)₂Cr₂O₇.

Explanation:

By definition a solution is a homogeneous physical mixture of two substances, a solute (item in least amount) and solvent (item in greatest amount). Typically the solution is generally described in terms of the concentration of solute in solution (solute + solvent). Concentration is, by definition amount of solute divided the volume of solution. That is ...

concentration = amount solute / volume of solution

There are numerous unit expressions of concentration such as lbs/gal, lbs/ft³, grams/ml and molarity(M). For this problem, Molar Concentration following concentration definition is ...

Molarity(M) = moles solute / volume of solution in liters

moles of (NH₄)₂Cr₂O₇ = 30.05g/252.07g/mole = 0.12mole

Volume of Solution = 500ml = 0.500Liters

∴Molarity = [(NH₄)₂Cr₂O₇] = 0.12 moles / 0.500L = 0.24M in (NH₄)₂Cr₂O₇.

Note => the brackets [ ] around the formula (NH₄)₂Cr₂O₇ indicates Molar concentration.

4 0
3 years ago
if an aqueous solution containing M2+ ions electrolyzed by a current of 3.00 A for 60.0 min., resulting in 3.66 g of solid M pro
Ilia_Sergeevich [38]
According to Faraday's Law,
 
                                        W  =   I t e / F
Where,
                                        W = Amount deposited = 3.66 g
                                         I  = Current = 3 A
                                         t  = Time = 60 min = 3600 s
                                         e = Chemical equivalence
                                         F = Faraday's Constant = 96500
Solving for e,
                                        e  =   F W / I t
Putting Values,
                                        e  =   (96500×3.66) ÷ (3 × 3600)
                                        e  =   32.7
As we know,
                                        e  = M / 2
solving for M,
                                        M  = e × 2
Putting value of e,
                                        M  = 32.7 × 2

                                        M  = 65.4

                                        M  = Zinc
6 0
4 years ago
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