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irga5000 [103]
3 years ago
8

Mass is always_____ it’s weight

Chemistry
2 answers:
Kitty [74]3 years ago
6 0

Answer:

less

Explanation:

Mass is the actual heaviness while the weight is the amount of gravity acting on it

S_A_V [24]3 years ago
3 0

Answer:

the same as

Explanation:

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How much heat is needed to raise the temperature of 50g of a substance by 15c when the specific heat is 0.92?
kirill [66]
The  heat  needed  to  raise  the  temperature   of  50g  of  substance  by    15 c   is  calculated as   follows

Heat  =   mc delta  T

m= mass   (50g)
c=  specific  heat  capacity  (0.92)
delta T=  change  in  temperature(  15 c)

heat  is  therefore=   50   x  0.92  x  15  =  690   

Nb:
  my   answer  has  no  units  since   the   given   specific  heat  capacity  has   no  units
8 0
4 years ago
When 2.56 g of a compound containing only carbon, hydrogen, and oxygen is burned completely, 4.89 g of CO2 and 3.00 g of h2o are
victus00 [196]

Answer:

The empirical formula is CH3O2

Explanation:

From The question, number of moles of CO2= 4.89/44=0.111mol

Number of moles of H2O=3/18= 0.1667moles

Since 1mole of CO2 contains 1mole of carbon and 2 moles of O2,

Implies that there 0.111 moles of C and 0.222moles of O2

Similarly also 0.1667moles of water contains 2 moles of H2 hence = 0.333 moles of H2

Dividing by smallest number= 0.111mol

For C = 0.111/0.111= 1

For H = 0.333/ 0.111= 3

For O = 0.222/0.111= 2

Hence the empirical formula= CH3O2

3 0
3 years ago
Read 2 more answers
which is a scientific claim? At least 75 percent of the class will pass the physical science test today because they studied mor
wlad13 [49]
Plants fertilized one per week with Super Plant Food Formula have been shown in testing to produce twice as much fruit as plants that are not. 

That answer is the most scientific because it states the word "testing" and in science they do a bunch of test to make a scientific claim. 
3 0
3 years ago
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E.) MO(NO2)3<br> What’s the name
astraxan [27]

Answer:

Molybdenum Nitrite

Explanation:

Mo => Molybdenum

NO2 => Nitrite

4 0
3 years ago
Which statement about fusion reactors is true? a Enriched uranium isotopes are used as fuel in fusion reactors. b Fuel for fusio
trapecia [35]

Answer:

b Fuel for fusion reactors can be extracted from ocean water.  

Explanation:

The fuel is deuterium, which makes up 0.02% of the hydrogen atoms in water. The oceans contain more than a billion cubic kilometres of water, so that's a lot of deuterium.

a is wrong. The fuel for fusion reactors is deuterium.

c is wrong.  There is much research, but there are no large-scale fusion reactors in operation.

d is wrong. Fusion reactors do not produce radioactive waste as spent fuel. Most of the radioactive waste would be the reactor core itself.

6 0
3 years ago
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