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nirvana33 [79]
3 years ago
7

If a piece of rock that has a volume of 0.73 L and a mass of 1524 g, what is the density of the rock in g/mL?

Chemistry
1 answer:
coldgirl [10]3 years ago
8 0

Answer:

do mass divided by volume

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A. Consider the following neutral electron configurations in which n has a constant value. Which configuration would belong to t
NeTakaya

Answer:

2s2 2p5

Rb < Sr< Sn< Te<I

Explanation:

Electron affinity is the ability of an atom to accept electrons to form negative ions.

Electron affinity is a periodic trend that decreases down the group but increases across the period.

This accounts for the trends observed in the answer. The atom having the electronic configuration, 2s2 2p5 must be a halogen and it exhibits the highest value of electron affinity.

Also, since electron affinity increases across the period, the electron affinities of the elements increases. Therefore, the arrangement of atoms as shown in the answer depends on increasing electron affinity.

6 0
3 years ago
2C 2 H 6 +7O 2 ***&gt;4CO 2 +6H 2 O if 7.0 g of C 2 H 6 react with 18 g of O 2 , how many grams of water will be produced
Alex787 [66]

Answer:

grams H₂O produced = 8.7 grams

Explanation:

Given 2C₂H₆(g) + 7O₂(g) => 4CO₂(g) + 6H₂O(l)

               7g           18g                             ?g

Plan => Convert gms to moles => determine Limiting reactant => solve for moles water => convert moles water to grams water

Moles Reactants

moles C₂H₆ = 7g/30g/mol = 0.233mol

moles O₂ = 18g/32g/mol = 0.563mol

Limiting Reactant => (Test for Limiting Reactant)  Divide mole value by respective coefficient of balanced equation; the smaller number is the limiting reactant.

moles C₂H₆/2 = 0.233/2 = 0.12

moles O₂/7 = 0.08

<u><em>Limiting Reactant is O₂</em></u>

Moles and Grams of H₂O:

Use Limiting Reactant moles (not division value) to calculate moles of H₂O.

moles H₂O = 6/7(moles O₂) = 6/7(0.562) moles H₂O = 0.482 mole H₂O yield

grams H₂O = (0.482mol)(18g·mol⁻¹) = 8.7 grams H₂O

3 0
3 years ago
What is the percentage error of a length measure of 0.229 cm if the correct value is 0.225 cm
olchik [2.2K]
((|Vtrue-Vobserved|) / (Vtrue)) x 100

1.77777%error
8 0
3 years ago
9. A gas canister can tolerate internal pressures up to 210 atmospheres. If a 2.0 L
Reika [66]

:))))))))

Here is my Answer:

8 0
2 years ago
Write a balanced equation for the reaction of chlorine gas with fluorine gas. express your answer as a chemical equation. identi
postnew [5]
The  balanced  equation  for  reaction  of  chlorine  gas  with   fluorine  gas  is  written  as  follows

Cl2(g)   +   3  F2(g)  =  2ClF3(g)

chlorine  react  with  flourine   to  form  CIF3  .    The  phases  of  reactant  and  product  is  the  gas    phase
6 0
3 years ago
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