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Harrizon [31]
3 years ago
15

Please help

Chemistry
1 answer:
ki77a [65]3 years ago
7 0

Answer:

Ruthenium or Dubnium

Explanation:

<em>Ruthenium</em> after Ruthenia or <em>Dubnium</em> after Dubna, a place in Russia

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5. What is the systemic name for the following structure?
topjm [15]

Answer:

You are not showing the question, but I believe the answer is cis-3,4-dimethyl-3-hexene.

Explanation:

since the substituents are on same side, it call cis. Followed by the name.

5 0
3 years ago
What is the distance from earth to Neptune in standard notation and scientific notation.
ira [324]

Answer:

Scientific Notation: 4.45963 x 109 km (29.811 A.U.) Scientific Notation: 4.53687 x 109 km (30.327 A.U.) By Comparison: If you weigh 100 pounds on Earth, you would weigh 110 pounds on Neptune.

4 0
3 years ago
Read 2 more answers
How much states have in united states
Gemiola [76]

Answer:

there are 50 states in the United States

Explanation:

you look at a map and count after that you count Alaska and Hawaii and you have 50

states

8 0
3 years ago
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Calculate the change internal energy (ΔE) for a system that is giving off 65.0 kJ of heat and is performing 855 J of work on the
ollegr [7]

Answer:  -64.1 kJ.  

Explanation:

According to first law of thermodynamics:

\Delta E=q+w

\Delta E=Change in internal energy

q = heat absorbed or released

w = work done or by the system

w = work done by the system=-P\Delta V  {Work is done by the system is negative as the final volume is greater than initial volume}

w = -855 Joules = 0.855 kJ     (1kJ=1000J)

q = -65.0 kJ  {Heat released by the system is negative}

\Delta E=-65.0J-(-0.855J)=-64.1kJ

Thus the change internal energy (ΔE) for a system that is giving off 65.0 kJ of heat and is performing 855 J of work on the surroundings is -64.1 kJ.  

6 0
4 years ago
What material makes up ash and pumice?
slamgirl [31]

Pumice rocks are formed due to the air that is trapped in between the rocks, a body of magma spurting out with dissolved gas under pressure. As the magma cracks through the Earth’s surface, the sudden pressure drop causes the gas to come out of the solution. The flash of gas form the vent slices the magma and blows it out as a molten lather. The lather hastily solidifies as it flies into the air and falls back to Earth as pieces of pumice.

7 0
3 years ago
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