The answer is C. Salt and water is a solution
A girl cycles for 3.00 hrs at a speed of 40.0 km/h. What distance did she ... A train travels at a speed of 30.0 km/hr and travel a distance of 240 km.. How long did it take the ... If a car travels 400 m in 20 seconds how fast is it going? Givens ... is in m/s2. 1. A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2.
Answer:
Yes, Mass is conserved.
Explanation:
Every chemical reactions obey the law of conservation of mass. The law of conservation of mass states that in chemical reactions, mass is always constant.
Equation:
2Na + Cl₂ → 2NaCl
From the equation above, one can observe that the reaction started using 2 atoms of Na and it produced 2 atoms of the same element in NaCl. A molecule of Cl produced 2 atoms of Cl in the NaCl
Design a simple experiment to support your answer:
Aim: To demonstrate the law of conservation of mass
One Na atom weighs 23g
Two Na atom will weigh 2 x 23 = 46g
1 atom of Cl is 35.5g
1 molecule of Cl containing two atoms of Cl will weigh 2 x 35.5 = 71g
Total mass of reactants = mass of 2Na + 1Cl₂ = (46 + 71)g = 117g
On the product side, Mass of 1 NaCl = 23+ 35.5 = 58.5g
Two moles of NaCl will give 2 x 58.5g = 117g
Since the mass on both side is the same, one can say mass is conserved.
Answer:
1. 10.37114 psi
2. 71.5178 KPa
3. 71517.8 Pa
4. 536.56 mmHg.
5. 21.12352 inHg
Explanation:
From the question given,
Pressure = 0.706 atm
The pressure in other units of measurement is obtained as follow:
1. Pressure in Psi
1 atm = 14.69 psi
Therefore, 0.706 atm = 0.706 x 14.69 = 10.37 psi
2. Pressure in KPa
1 atm = 101.3 kPa
Therefore, 0.706 atm = 0.706 x 101.3 = 71.5178 KPa
3. Pressure in Pa
1 atm = 1.013x10^5 Pa
Therefore, 0.706 atm = 0.706 x 1.013x10^5 = 71517.8 Pa
4. Pressure in mmHg
1 atm = 760mmHg
Therefore, 0.706 atm = 0.706 x 760 = 536.56 mmHg
5. Pressure in inHg
1 atm = 29.92 inHg
Therefore, 0.706 atm = 0.706 x 29.92 = 21.12352 inHg
