100% tevredenheidsgarantie Direct beschikbaar na betaling Zowel online als in PDF Je zit nergens aan vast
logo-home
Straighterline Chemistry Final Test Questions and Answers $13.99   In winkelwagen

Tentamen (uitwerkingen)

Straighterline Chemistry Final Test Questions and Answers

 7 keer bekeken  0 keer verkocht
  • Vak
  • Straighterline Chemistry
  • Instelling
  • Straighterline Chemistry

Straighterline Chemistry Final Test

Voorbeeld 3 van de 18  pagina's

  • 9 september 2024
  • 18
  • 2024/2025
  • Tentamen (uitwerkingen)
  • Vragen en antwoorden
  • Straighterline Chemistry
  • Straighterline Chemistry
avatar-seller
julianah420
Straighterline Chemistry Final Test

findings that are summarized based on a pattern or trend - answer Law

tentative explanation for a set of observations - answer Hypothesis

If a liquid contains 60% sugar and 40% water throughout its composition then what is it
called? - answer Homogeneous mixture

does not have a uniform composition throughout - answer Heterogeneous mixture

represents a physical change? - answer Water, when heated, forms steam.

How many micrograms are in 65.3 kg? – answer e. 6.53 × 1010 μg

A smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0
millimeters (depth). What is the volume of the smart phone in cubic centimeters? (1 in =
2.54 cm) - answer58 cm3

Given that 1 inch = 2.54 cm, 1.00 cm3 is equal to - answer0.0610 in3

What terms defines a mass which is exactly equal to 1/12 the mass of one carbon-12
atom? - answer Atomic mass unit

How many neutrons are there in an atom of lead whose mass number is 208? -
answer126

Which of these elements is chemically similar to magnesium? - answer Calcium

C(graphite) and C(diamond) are examples of: - answer allotropes of carbon.

The 80Br- ion has - answer35 protons, 45 neutrons, 46 electrons.

The formula for sodium sulfide is - answerNa2S

Which one of the following formulas of ionic compounds is the least likely to be correct?
- answerCa2NO3

What is the name of ClO - ion? - answer hypochlorite

Which of the following is a molecular formula for a compound with an empirical formula
of CH? - answerC6H6

,What is the energy in joules of a mole of photons associated with red light of
wavelength 7.00 × 102 nm? (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s; NA = 6.022 ×
1023 /mole) - answer1.71 × 105 J

Which is the correct electron configuration for gold? - answer[Xe]4f145d106s1

Use the Rydberg equation to calculate the frequency of a photon absorbed when the
hydrogen atom undergoes a transition from n1 = 2 to n2 = 4. (R = 1.096776 × 107 m-1;
c = 3.00 × 108 m/s) - answer6.17 × 1014 s-1

A 6.0-gram champagne cork is shot out of an opened champagne bottle and traveled at
a speed of 65 km/hour. Calculate the de Broglie wavelength (in meters) of the cork. -
answer6.1 × 10-33 m

A(n) _________ is a point at which a standing wave has zero amplitude. - answer node

Calculate the wavelength associated with a 20Ne+ ion moving at a velocity of 2.0 × 105
m/s. The atomic mass of Ne-20 is 19.992 amu. (1 amu = 1.66 × 10-24 g and h = 6.63 ×
10-34 J • s) - answer1.0 × 10-13 m

The Pauli exclusion principle states that no ____ electrons within an atom can have the
same ____ quantum numbers. - answer2; 4

Emission spectra - answer can be used to identify unknown atoms.

Which one of the following equations correctly represents the process relating to the
ionization energy of X? – answer X(g) → X+(g) + e-

How does atomic radius change as you move across the periodic table? - answer
Atomic radius decreases moving from left to right across a period and increases from
top to bottom.

Which of these choices is the electron configuration of the iron(III) ion? – answer a.
[Ar]3d5

An element with the general electron configuration for its outermost electrons of ns2np1
would be in which element group? – answer b. 3A

The effective nuclear charge for an atom is less than the actual nuclear charge due to -
answer shielding.

Which pair of ions exhibits the greatest attractive force between them? - answerMg2+
and O2-

Which of the following is a basic oxide? - answerMgO

, Which of these compounds is most likely to be covalent? - answerCS2

In the Lewis structure of the iodate ion, IO3-, that satisfies the octet rule, the formal
charge on the central iodine atom is - answer2.

Which molecule has the largest dipole moment? - answerHF

In which of the following species does the central atom violate the octet rule? - answerb.
SF4

Which of these ionic solids would have the largest lattice energy? - answerCaCl2

The total number of bonding electrons in a molecule of formaldehyde (H2CO) is -
answer8.

Which of the following molecules has a nonzero dipole moment? - answerSF2

According to the VSEPR model, a molecule with the general formula AB5 with one lone
pair on the central atom will have a ______ molecular geometry - answersquare
pyramidal

Which is the most reasonable prediction for the three F-Br-F bond angles in BrF3? -
answerc. 86°, 86°, and 172°

When PCl5 solidifies it forms PCl4+cations and PCl6- anions. According to valence
bond theory, what hybrid orbitals are used by phosphorus in the PCl4+cation? -
answerc. sp3

According to the VSEPR model, which one of the following molecules and ions will
definitely have at least one 90° bond angle in it? (In each case, except water, the central
atom is the first one in the formula.) - answerc. PCl5

What is the number of lone electron pairs on the central atom of a molecule having a
trigonal pyramidal molecular geometry, such as NH3? - answera. 1

For which one of the following molecules is the indicated type of hybridization not
appropriate for the central atom? - answera. BeCl2; sp2

According to the VSEPR model, the predicted molecular geometry of ammonia, NH3, is
- answere. trigonal pyramidal.

What is the mass of one copper atom? (NA = 6.022 × 1023 mol-1) - answera. 1.055 ×
10-22 g

What is the percent sulfur in iron(III) sulfate? - answerc. 24%

Voordelen van het kopen van samenvattingen bij Stuvia op een rij:

Verzekerd van kwaliteit door reviews

Verzekerd van kwaliteit door reviews

Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!

Snel en makkelijk kopen

Snel en makkelijk kopen

Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.

Focus op de essentie

Focus op de essentie

Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!

Veelgestelde vragen

Wat krijg ik als ik dit document koop?

Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.

Tevredenheidsgarantie: hoe werkt dat?

Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.

Van wie koop ik deze samenvatting?

Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper julianah420. Stuvia faciliteert de betaling aan de verkoper.

Zit ik meteen vast aan een abonnement?

Nee, je koopt alleen deze samenvatting voor $13.99. Je zit daarna nergens aan vast.

Is Stuvia te vertrouwen?

4,6 sterren op Google & Trustpilot (+1000 reviews)

Afgelopen 30 dagen zijn er 66579 samenvattingen verkocht

Opgericht in 2010, al 14 jaar dé plek om samenvattingen te kopen

Start met verkopen
$13.99
  • (0)
  Kopen