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ZanzabumX [31]
3 years ago
14

How much energy is needed to turn 23 g of water completely into steam if it starts at a temperature of 8.0oC?

Chemistry
1 answer:
asambeis [7]3 years ago
6 0

Answer:

69% energy

Explanation:

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If a notebook has a mass of 50 grams, a length of 12 cm, a width of 5 cm and a height of 1cm, what is the volume of the notebook
Wewaii [24]

Answer:

I'm pretty sure the answer is 60cm.

Explanation:

Volume = L×W×h

6 0
3 years ago
How many moles of electrons must be transferred to plate out 110 g of manganese (MW ~ 55g/mol) from a solution of permanganate (
ololo11 [35]

Answer:

14 mol e⁻

Explanation:

Step 1: Write the balanced half-reaction for the reduction of permanganate to manganese

8 H⁺(aq) + 7 e⁻ + MnO₄⁻(aq) ⇒ Mn(s) + 4 H₂O(l)

Step 2: Calculate the moles corresponding to 110 g of manganese

The molar mass of Mn is 55 g/mol.

110 g × 1 mol/55 g = 2 mol

Step 3: Calculate the number of moles of electrons needed to produce 2 moles of Mn

According to the half-reaction, 7 moles of electrons are required to produce 1 mole of Mn.

2 mol Mn × 7 mol e⁻/1 mol Mn = 14 mol e⁻

8 0
3 years ago
What is the difference between an autosome and a sex chromosome
tatyana61 [14]
. The members of theautosome pairs are truly homologous; that is, each member of a pair contains a full complement of the same gene.The sex chromosomes, on the other hand, do not constitute a homologous pair.
8 0
3 years ago
I need help with this question ASAP
avanturin [10]

Answer:

True

Explanation:

Asexual reproduction does not involve sex cells or fertilization . Only one parent is required, unlike sexual reproduction which needs two parents. As a result, the offspring are genetically identical to the parent and to each other.

7 0
3 years ago
What changed about the peppered moth population during the second industrial revolution
Marysya12 [62]

Answer:

The months became darker colored and more darker colored moths were sighted.

Explanation:

All of the new air pollution caused the moths to alter there wings and bodies. The moths had no adaptation to this air pollution, causing them to be discolored.

7 0
3 years ago
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