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LUCKY_DIMON [66]
4 years ago
6

Which of these statements correctly compares probeware (such as an electronic temperature probe) to traditional analog tools (su

ch as a liquid-based thermometer)?
Chemistry
2 answers:
svet-max [94.6K]4 years ago
7 0
<span>Measurements by traditional analog tools are less prone to experimental error.</span>
GaryK [48]4 years ago
4 0

yeah the answer above is wrong,

Out of the four choices:

Which of these statements correctly compares probeware (such as an electronic temperature probe) to traditional analog tools (such as a liquid-based thermometer)?

A. Measurements by traditional analog tools are good to a larger number of significant figures.

B. Measurements by traditional analog tools are less prone to experimental error.

C. Probeware is typically very difficult to transport.

D. Probeware is useful for obtaining many measurements in rapid   succession.

B is wrong, I'd guess A or D. Hope this helps someone.

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Which characteristic of water helps it form strong bonds with other water molecules?
Solnce55 [7]

Answer:

The correct answer is Polar structure. See the explanation below, please.

Explanation:

The water molecule is formed by the union of an oxygen atom (O) to two hydrogen atoms (H), forming at an angle of 105 °, having the negative electron density over the O and positive over the H. The water due to its polarity can interact with other equal molecules, by hydrogen bridge (occurs between the atom of H and an electronegative element, in this case the O). It corresponds to a type of dipole-dipole interaction.

8 0
3 years ago
What is the boiling point of a solution made by adding 6.69 g of magnesium chloride to 250.0 g of water?. Use the formula of the
olya-2409 [2.1K]

Answer:

100.432ºC

Explanation:

Ebullioscopy is the elevation of the boiling point of a solvent that has a solute nonvolatile dissolved. The change in the temperature may be calculated by Raoult's law:

ΔT = Kb.W.i

Where <em>ΔT</em> is the temperature change, <em>Kb</em> is the ebullioscopy constant,<em> W</em> is the molality and <em>i</em> is the Van't Hoff factor, which determinates the particles that affect the proper.

The molality is:

W = m1/(M1xm2)

Where <em>m1</em> is the solute mass (in g), <em>M1</em> is the molar mass of the solute, and <em>m2</em> is the mass of the solvent (in kg).

The Van't Hoff factor is the number of final particles divided by the number of initial particles. Magnesium is from froup 2, so it forms the cation Mg⁺², and chlorine ins from group 7 and forms the anion Cl⁻, the salt is MgCl₂ and dissociates:

MgCl₂  → Mg⁺²(aq) + 2Cl⁻(aq)

So, it has 1 particle in initial, and 3 in final (1  Mg⁺² and 2 Cl⁻). So:

i = 3/1 = 3.

The molar mass of MgCl₂ is: 24.3 + 2x35.5 = 95.3 g/mol, m1 = 6.69g, m2 = 0.250 kg, so:

W = 6.69/(95.3x0.250)

W = 0.281 m

Then:

ΔT = 0.512x0.281x3

ΔT = 0.432ºC

The normal boling point of water is 100ºC, so

T - 100 = 0.432

T = 100.432ºC

6 0
3 years ago
Im 16 year old girl my name is sara and im looking for a bf any takers
vampirchik [111]
I hate to tell you this but this isnt tinder hunny
5 0
3 years ago
Read 2 more answers
The broadest taxonomic group for classifying living organisms is the blank
zloy xaker [14]

Answer:

Domain

Explanation:

5 0
3 years ago
Phosphorus has three electrons in its 3p sublevel and sulfur has four. Phosphorus should have the lower ionization energy but it
Nadya [2.5K]

Answer:

B

Explanation:

First of all it is important to know that a half filled orbital is particularly stable. In phosphorus all the electrons occur singly in the 3p sublevel minimizing inter electronic repulsion hence it is more difficult to remove an electron from this energetically stable arrangement. In sulphur, electrons are paired in one of the 3p orbitals thereby lowering the energy of that level due to instability caused by interelectronic repulsion between two electrons in the same orbital.

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3 years ago
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