Answer:
The answer would be B. 1 joule/s.
Explanation:
The answer is B because the power in general is normally defined as energy over time. Watts are defined as <em><u>1 Watt = 1 Joule</u></em> per second (1W = 1 J/s) which means that 1 kW = 1000 J/s.
Another reason why it's B is because I had the same exact question in class, I took a screenshot of it a day ago:
<em><u>Hope this helps </u></em>
Answer:
Explanation
Density can be found by dividing the mass by the volume.
We know the iron sheet has a mass of 28.5 grams and the volume is 3.60 milliliters.
Substitute the values into the formula.
Divide.
Let's round to the nearest thousandth.
The 6 in the ten-thousandth tells us to round the 6 to a 7.
The density of iron is about <u>7.917 grams per milliliter.</u>
Answer:
A. For every mole of carbon dioxide consumed, one mole of water is consumed
Explanation:
The photosynthetic equation is given as follows:
6CO2 + 6H2O → C6H12O6 + 6O2
The coefficient in front of each reactant and product is used to represent the number of moles needed for each compound/element in the reaction.
Based on this, this means that 6 moles of CO2 (carbon dioxide) needs to react with 6 moles of H2O (water) to form the products.
In a simpler form, this also means that for every 1 mole of carbon dioxide (CO2) consumed, one (1) mole of water (H2O) is consumed.
Answer:
B) The term "inert" was dropped because it no longer described all the group 8A elements.
Explanation:
Inert elements in chemistry simply refers to elements that are chemically inactive and are not expected to form any compounds. this is the general belief for the group 8 elements as they all have complete duplet/octet configurations (and ideally, they ought to be very stable with no tendency to form compounds by participating in the loss and gain of electrons). However the discovery of compounds like xenon tetrafluoride (XeF4) proved this to be wrong.
Again, the reason the term - inert gses was droppedis beacause this term is not strictly accurate because several of them do take part in chemical reactions.
After dropping the term - Inert gases, they are now referred to as noble gases.
I think the answer is a, that is the only one that makes sense.