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agasfer [191]
2 years ago
7

Put the list in chronological order (1–5).

Chemistry
2 answers:
Reptile [31]2 years ago
6 0

Answer:

The chronological order for given steps will be:

1. Weigh and fold the filter paper.

2. Place the filter paper in the funnel, then place the funnel in the Erlenmeyer flask.

3. Allow the solid/liquid mixture to drain through the filter.

4. Use water to rinse the filter paper containing the mixture.

5. Weigh the dried filter paper and copper.

Leokris [45]2 years ago
4 0

Explanation:

Filtration is a separation technique in which solid particles suspended in liquid medium are separated by allowing the mixture through the pores of the filter paper. By this solid particles get collect on filter paper and liquid drains out from the pores of the filter paper.

The chronological order for given steps will be:

  1. Weigh and fold the filter paper.
  2. Place the filter paper in the funnel, then place the funnel in the Erlenmeyer flask.
  3. Allow the solid/liquid mixture to drain through the filter.
  4. Use water to rinse the filter paper containing the mixture.
  5. Weigh the dried filter paper and copper.
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The gas in a sealed container has an absolute pressure of 125.4 kilopascals. If the air around the container is at a pressure of
AlexFokin [52]

Answer: C. 25.6 kPa

Explanation:

The Gauge pressure is defined as the amount of pressure in a fluid that exceeds the amount of pressure in the atmosphere.

As such, the formula will be,

PG = PT – PA

Where,

PG is Gauge Pressure

PT is Absolute Pressure

PA is Atmospheric Pressure

Inputted in the formula,

PG = 125.4 - 99.8

PG = 25.6 kPa

The gauge pressure inside the container is 25.6kPa which is option C.

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Which milligram quantity contains a total of four significant figures
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D has a total of four significant figures.
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Sodium hydroxide reacts with carbon dioxide to form sodium carbonate and water: 2 naoh(s) + co2(g) → na2co3(s) + h2o(l) how many
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No of moles of naoh = 2.40 ÷ (23+16+1) = 0.06mol

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Enter the expression 147N α, where α is the lowercase Greek letter alpha
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Core reactions that occur:

¹⁴₇N + ⁴₂He → ¹⁷₈O + ¹₁H

Can be written :

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<h3>Further explanation </h3>

Fusion and fission reactions are reactions involving atomic nucleus reactions

Fission reaction is a nucleation division reaction by firing a particle usually neutron so that it gets smaller particles of atomic nuclei.

A fusion reaction is a combining reaction of 2 atomic nuclei. Usually what is often used is a reaction between the hydrogen isotope that will form Helium

At the core, the reaction applies the law of eternity

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the energy before and after the reaction is the same

  • 2. atomic number

the number of atomic numbers before and after the same

  • 3. mass number

the number of mass numbers before and after the same

Particles that play a role in core reactions include

  • alpha α particles ₂He⁴
  • beta β ₋₁e⁰ particles
  • gamma particles γ
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In general, the core reaction equation can be written:

<h3> X + a ---> Y + b + Q </h3>

X = target core

a = particle fired

Y = new core

b = the particle produced

Q = heat energy

or can be written simply

<h3> X (a, b) Y </h3>

In the ¹⁴₇N atomic nucleus, a fusion reaction occurs with ⁴₂He which produces isotopes of Oxygen and ¹₁H protons.

¹⁴₇N + ⁴₂He → ¹⁷₈O + ¹₁H

This reaction can be written down

¹⁴₇N (α, H) ¹⁷₈O

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Keywords: Fusion and fission reactions, alpha ₂He⁴, nuclei

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