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Dmitrij [34]
3 years ago
13

The power of the crane was 68600 W

Chemistry
1 answer:
Anika [276]3 years ago
4 0

Answer:

t = 50 s

Explanation:

P = W/t

Solving for t,

t = W/P = (3430000 J)/(68600 Watts)

= 50 s

Note: 1 Watt = 1 J/s

You might be interested in
In the reaction shown below, which substance is oxidized?
k0ka [10]

Answer:

Na

Explanation:

Because sodium loses one electron and becons Na+ and sodium oxidizes

Los of electron is oxidation

8 0
3 years ago
Consider the titration of a 26.1 −mL sample of 0.125 M RbOH with 0.110 M HCl. Determine each of the following.
Evgen [1.6K]

Answer:

We're asked to find the molar concentration of the

NaCl

solution given some titration data.

Let's first write the chemical equation for this reaction:

NaOH

(

a

q

)

+

HCl

(

a

q

)

→

NaCl

(

a

q

)

+

H

2

O

(

l

)

Using the molarity equation, we can find the number of moles of

HCl

that reacted:

molarity

=

mol solute

L soln

mol solute

=

(

molarity

)

(

L soln

)

mol HCl

=

(

0.105

mol

L

)

(

0.0250

L

)

=

0.00263

mol HCl

(volume converted to liters)

Now, using the coefficients of the chemical reaction, we can determine the number of moles of

NaOH

that reacted:

0.00263

mol HCl

(

1

l

mol NaOH

1

mol HCl

)

=

0.00263

mol NaOH

Lastly, we'll use the molarity equation (using given volume of

NaOH soln

) again to determine the molarity of the sodium hydroxide solution:

molarity

=

mol solute

L soln

M

NaOH

=

0.00263

l

mol

0.315

l

L

=

0.00833

M

(volume converted to liters)

8 0
3 years ago
How many grams of sulfur (S8S8) must be dissolved in 100.0 g naphthalene (C10H8C10H8) to make a 0.11 mm solution
Rainbow [258]

Answer:

5.64x10⁻³ g of S₈S₈

Explanation:

We consider mm as milimolal

Milimolal = molal . 1000

Molal are the moles of solute contained in 1kg of solvent.

Solute → Sulfur (S₈S₈)

Solvent → naphthalene

0.11 mm / 1000 = 1.1x10⁻⁴ molal

moles of solute / kg of solvent = 1.1x10⁻⁴ molal

moles of solute / 0.1 kg of solvent = 1.1x10⁻⁴ molal

moles of solute = 1.1x10⁻⁴ m/kg .  0.1kg → 1.1ₓ10⁻⁵ moles

Molar mass S₈S₈ = 512.96 g/m

1.1ₓ10⁻⁵ mol . 512.96 g/m = 5.64x10⁻³ g

4 0
3 years ago
C6H5Cl is it polar or nonpolar?
stellarik [79]

Answer:

c6h5cl is slightly polar

5 0
4 years ago
Begin by writing formulas for the reactants and products, including physical states. When necessary use coefficients to balance
xz_007 [3.2K]

Answer:

NaH(s) + H2O(l) ------> NaOH(aq) + H2(g)

2Al(s) + 3Cl2(g) -----> 2AlCl3(s)

Explanation:

The rule of thumb in balancing chemical reaction equation is that the number of atoms of each element on the reactant side must be the same as the number of atoms of the same element on the product side. Only then can any reaction equation be seen as balanced.

For example there are two aluminum atoms on both sides of the reaction equation and six chlorine atoms on both sides of the reaction equation. Hence the reaction equation is balanced.

7 0
3 years ago
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