How many neutrons does the isotope N-14 have?

Answers

Answer 1
Answer:

Answer:

7

Explanation:

N-14 has 7

i looked it up ye ur probably gonna get it right

Answer 2
Answer:

Answer:

7 protons + 7 neutrons!

Explanation:


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For your sink at home, the flow rate in is 5000 units/hr. Accumulation is 2500 units. What is the accumulation rate if the out flow is 60 units/min? multiple choicea) 2400 units/hr b) 400 units/hr c)100 units/hr d) 1400 units/hr e) 3400 units/hr

f) other ____________________

Answers

Answer:

  • Option d) 1400 units/hr

Explanation:

Using law of conservation of mass, you can do a mass balance or volume balance:

  • Volume in - Volume out = Volume accumulation

If you divide by time unit, you get flow balance:

  • Volume in / time - Volume out / time = Volume accumulation / time

  • Flow rate in - Flow rate out =  Accumulation rate

Here you have:

  • Flow rate in = 5000 units/h

  • Flow rate out = 60 units/min

        Convert to rate in units/h: (60 units /min) × (60 min/h) = 3600 units/h

        Flow rate out = 3600 units/h

Then:

  • Accumulation rate = 5000 units/h - 3600 units/h = 1400 units/h

The mass of a water balloon is 2 kilograms. The speed that the water ballon is traveling when it hits the ground is 20 meters/second.What is the total kinetic energy of a water balling that hits the ground after it is dropped from a balcony ?

Answers

Answer:

400 Joules

Explanation:

From the question,

The total kinetic energy of the water balling when hits the ground is given as

K.E = 1/2mv².................. Equation 1

Where K.E = Kinetic Energy of water ballon, m = mass of water balloon, v = velocity of water ballon

Given: m = 2 kilograms, v = 20 meters/second.

Substitute these values into equation 1

K.E = (2×20²)/2

K.E = 2×400/2

K.E = 400 Joules

Identify the molecule with the strongest intermolecular force.C6H6
OF2
CHCl3
H2O

Answers

Answer:

C6H6 has the strongest intermolecular force

i think

Answer:

H2O

Explanation:

Because it is a hydrogen bond which is said to be the strongest bond between the H and a N,O, or F combination

Which process is used to make lime (calcium oxide) from limestone (calcium carbonate)?​

Answers

Answer:

Explanation:

Calcium oxide is fromed by the decomopostion of CaCO3 at high temperature.

CaCO3   ------> CaO  +CO2

Hope this helps you

Solve the problems. Express your answers to the correct number of significant figures. 0.09 + 1.324 =
41.0 + 78.3 =

Answers

Ans: 1) 1.41

        2) 119.3

While adding two numbers, the rule of significant figures requires that the number of decimal places in the final answer is equal to that of the term with the least decimal places

In the given examples:

1) 0.09 - has 2 decimal places

1.324- has 3 decimal places

Sum = 0.09 + 1.324 = 1.414

Round off to 2 decimal places = 1.41

2) 41.0 - has 1 decimal place

78.3- has 1 decimal place

Sum = 41.0 + 78.3 = 119.3

Final answer will also have 1 decimal place = 119.3

1.    1.141

2.  119.3

HOPE THIS HELPS.


During an experiment, a student adds 2.90 g CaO to 400.0 mL of 1.500 M HCl . The student observes a temperature increase of 6.00 °C . Assuming that the solution's final volume is 400.0 mL , the density is 1.00 g/mL , and the heat capacity is 4.184 J/g⋅°C , calculate the heat of the reaction, ΔHrxn .

Answers

Answer:

ΔHrxn = 193107.69 J/mol

Explanation:

ΔHrxn = mcΔT

m = mass

c = heat capacity

ΔT = temperature variation

density = m/V

m = density x V

m = 1.00 g/mL x 400.0 mL

m = 400.0 g

ΔHrxn = mcΔT

ΔHrxn = 400 g x 4.184 J/g°C x 6.00 °C

ΔHrxn = 10041.6 J

CaO + 2HCl  → CaCl₂ + H₂O

CaO = 56.0774 g/mol

2.90 g CaO = 0.052 mol

400.0 mL of 1.500 mol/L HCl = 0.6 mol HCl

ΔHrxn = 10041.6 J is for 0.052 mol of CaO

ΔHrxn = 193107.69 J is for 1 mol of CaO