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4 years ago

A bowl of trail mix and a bowl of soup are examples of what type of matter?

2 answers:

7 0

I think it would be compound because they're both a compound. Not both of them are an Element, and not both of them would be a Solution. A heterogeneous mixture isn't right either so.. The correct answer is D) Compound.

BaLLatris [955]4 years ago

5 0

I believe it would be compound.

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What is atomic mass, atomic number, isotopes and how are all these terms related to each other?

Airida [17]

Atomic mass deals with the number of protons and neutrons added together, atomic number deals with protons only, though isotopes can be explained like this, say you had a hydrogen atom it's one proton and one electron if you add a neutron to it, the hydrogen becomes Deuterium which is a isotope of hydrogen it's the same atom just a neutron added to it for a different atomic mass if only slightly changed

8 0

3 years ago

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Which of the following defines the wavelength of a wave? A. the distance between peaks of a wave B. the speed that a wave is pas

Maru [420]

Answer:

D.the wavelength of a wave is the distance between two successive peaks or two successive troughs or a peak and trough

5 0

4 years ago

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Silver can be electroplated at the cathode of an electrolysis cell by the half-reaction. Ag+(aq)+e−→Ag(s) Part A Silver can be e

dmitriy555 [2]

Answer: Mass of silver deposited at the cathode is 37.1g

Explanation: According to Faraday Law of Electrolysis, the mass of substance deposited at the electrode (cathode or anode) is directly proportional to quantity of electricity passed through the electrolyte

Faraday has found that to liberate one gm eq. of substance from an electrolyte, 96500C of electricity is required.

$Ag^+$ +e− ==> Ag(s)

Given that

Current (I) = 8.5A

Time (t) = 65 *60 = 3900s

Quantity of electricity passed = 8.5*3900 =33150C

Molar mass of Ag= 108g

96500C will liberate 108g

33150C will liberate Xg

Xg= (108*33150)/96500

=37.1g

Therefore the mass of Ag deposited at the cathode is 37.1g.

3 0

3 years ago

Characteristics of α, β, and γ rays

Allisa [31]

Answer:

1. it is symbolized as 4/2 He : Alpha rays

2. it has the weakest penetrating power : Alpha rays

3. It is a high-speed electron : beta rays

4. It possesses neither mass nor charge : gamma rays

5. it has the strongest penetrating power : beta rays

6. its is symbolized as 0/-1e : beta rays

7. it is the most massive of all the components: alpha rays

Explanation:

Let us consider the characteristics of each of the given rays.

α rays: These are helium nucleus so are symbolized by $He^{4}_{2}$

Due to two protons and two neutrons unlike beta and gamma rays these are the most massive and thus have least penetrating power among the three given rays.

β rays: These are actually high speed electrons and are symbolized as $^{0}_{-1}e$ . Due to lesser mass than alpha rays they are more penetrating than them however less penetrating than gamma rays.

γ rays : They carry no charge or mass. Due to least massive among the three rays they have highest penetrating power.

7 0

4 years ago

The filling of which orbital is represented by the transition metals in period 4?

Sindrei [870]

Answer: 3d

Explantion:

1) Period 4 contains the elements with atomic numbers 19 through 36.

2) The elements with atomic numbers 19 (K) and 20 (Ca) fill the orbital 4s.

3) After that, as Aufbau's rule may help you to remember, the energy of the orbitals 3d is lower than the energy of the orbtitals 4p. So, the element 21 (Sc) start fillind the orbital 3d.

There are ten 3d orbitals, so the elements 21 through 30 fill the 3d orbitals.

Those elements, called transition metals are: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn.

When the 3d orbitals are full, the next elements in the same period 4, fill the six 4p orbitals.

3 0

3 years ago

Read 2 more answers