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adoni [48]
2 years ago
9

Which type of disease is caused by pathogens? a(n) disease

Chemistry
1 answer:
Lerok [7]2 years ago
4 0
Sorry I’m just here for more questions
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Help people i really need this
denis-greek [22]
Option “A” is the crest of the wave because it’s the maximum value of upward displacement within a cycle.
5 0
3 years ago
A certain gas is present in a 13.0 L cylinder at 1.0 atm pressure. If the pressure is increased to 2.0 atm , the volume of the g
Scorpion4ik [409]
<h3>Answer:</h3>

The gas obeys the Boyle's law

<h3>Explanation:</h3>
  • According to Boyle's law, the volume of a fixed mass of a gas and the pressure are inversely proportional at constant absolute temperature.
  • That is; P\alpha\frac{1}{V}
  • Therefore, k=PV, where k is a constant
  • At varying volume and pressures while keeping absolute temperature constant; k = P1V1 =P2V2

In this case, we are given;

Initial Volume of 13.0 L at initial pressure of 1.0 atm

New volume of 6.5 L at new pressure of 2.0 atm

But, K = PV

Therefore,

k1 = P1V1

   = 1.0 atm × 13.0 L

  = 13 atm.L

k2 = P2V2

    = 2.0 atm × 6.5 L

    = 13 atm.L

Thus, k1=k2

Thus, the gas obeys the Boyle's law

8 0
3 years ago
Will give brainliest
Sunny_sXe [5.5K]
The answer is 33390.
8 0
3 years ago
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Complete and balance the molecular equation for the reaction of aqueous sodium carbonate, Na 2 CO 3 , and aqueous nickel(II) chl
pantera1 [17]

Answer:

NiCl2 (aq) + Na2CO3 (aq) ---> NiCO3 (s) + 2NaCl (aq)

Explanation:

Soluble ionic compounds exist as ions in solution.

Na 2CO3, will contain Na2CO3 (aq) --> 2Na ^+ (aq) + CO2 ^-3 (aq)

The same way, a solution of calcium chloride,  

CaCl 2, will contain CaCl2 (aq) --> Ca2^+ (aq) + 2Cl^−  (aq)

Mixing both solution, the calcium cations  

Ca 2^+ , will apir up with the carbonate anions,  CO2^−3 , and form the Insoluble calcium carbonate, CaCO ^3, which precipitates out of solution.

The complete ionic equation, which features all the ions that are present in solution, will be like this

2 Na^+ (aq) + CO2^−3 (aq) + Ca2^+ (aq) + 2Cl^−  (aq) --> CaCO 3 ↓ (s)  + 2Na^+ (aq) + 2Cl^− (aq)

Notice that you have two sodium cations and two chloride anions on the products' side, which is why you have  2NaCl

NiCl2 (aq) + Na2CO3 (aq) ---> NiCO3 (s) + 2NaCl (aq)

4 0
3 years ago
According to "Black Hole Beginnings," what causes the end of a star?
Alisiya [41]

Answer:

when it gets so dense and heavy it implodes, and creates a black hole

Explanation:

7 0
3 years ago
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