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erastovalidia [21]
3 years ago
14

Which answer best completes the following sentence?Moseley's assertions about the arrangement of elements actually _____ Mendele

ev's earlier work on the periodic table.
disproved

emphasized

supported

discarded
Chemistry
1 answer:
trapecia [35]3 years ago
3 0
A. Disproved is the correct answer to your question.
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What is an energy conserved system ?
grin007 [14]

Answer: In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

Explanation:

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6 0
3 years ago
Which equilibrium system has HCO3- acting as a Brønsted-Lowry base?
IrinaVladis [17]
A Brønsted-Lowry base is a base is a proton acceptor.

In the only case where this is done is when HCO3- accepts a proton and becomes H2CO3.

In the other cases, HCO3- is donating a proton which makes it an acid.
8 0
3 years ago
Please help....thanks :)
Naya [18.7K]

Answer: someone help me with my work its so  hard

Explanation:

6 0
3 years ago
In an experiment designed to determine the concentration of Cu 2 ions in an unknown solution, you need to prepare 100 mL of 0.10
Alexxandr [17]

Answer:

1.6 grams

Explanation:

We need to prepare 100 mL (0.100 L) of a 0.10 M CuSO₄ solution. The required moles of CuSO₄ are:

0.100 L × 0.10 mol/L = 0.010 mol

The molar mass of CuSO₄ is 159.61 g/mol. The mass corresponding to 0.010 moles is:

0.010 mol × (159.61 g/mol) = 1.6 g

We should use 1.6 grams of CuSO₄.

8 0
3 years ago
All of the following conditions of STP are true except A. 101.3 kPa B. 273.15 K C. 22.4 L D. 3.81 kPa
kaheart [24]
  3.81   kpa  is  the  condition   which  is  not  true   at  STP

According  to  IUPAC  the  standard  temperature  and  pressure  that  is  STP  the  temperature  is   273.15  k  or  0   degrees  celsius .  and  the  absolute  temperature   of   101.325 Kpa   or  1  atm.  In  addition at STP   the  volume of  ideal  gas  is  22.4 
8 0
3 years ago
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