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Stolb23 [73]
3 years ago
7

Identify the situation where work is being done. Carrying a box of crayons across the room. Lifting a backpack off the floor Hol

ding a football Sitting on a stool
Chemistry
2 answers:
Likurg_2 [28]3 years ago
7 0
Lifting the backpack off the floor. Force is being applied in only one direction then (up) which is what constitutes as work. Carrying the box of crayons applies force in two directions (up and forward), which cancel each other out. Work has a vector, which is a quantity containing both direction and magnitude (one, finite direction, not two).
forsale [732]3 years ago
6 0

Answer:

Lifting a backpack off the floor

Explanation:

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I need an answer now please asap and you will me marked brainiest please it's missing I need it now.
kogti [31]

Answer:

Molecular Mass:

1. 40g per mole

2. 19g per mole

3. 64g per mole

4. 32 g per mole

5. 17g per mole

6. 59.5g per mole

7.58.5 g per mole

8.220g per mole

9. 78g per mole

10. 200g per mole

Explanation:

Molecular Mass = Number of atom x atomic mass of an element

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The instruction booklet for your pressure cooker indicates that its highest setting is 12.8 psi . You know that standard atmosph
lubasha [3.4K]

Answer:At 237.57^oC food will cook in the pressure cooker set on high.

Explanation:

Standard atmospheric pressure P_1= 14.7 Psi = 1.0001 atm (1 Psi=0.06804 atm)

Standard temperatureT_1 = 273.15 K

Highest pressure offered by pressure cooker: 12.8 Psi = 0.8709 atm

Pressure (P_2) inside the pressure cooker on the highest setting at temperatureT_2 :

P_2 =  1.0001 atm + 0.8709 atm = 1.8710 atm

According to Gay lussac law  :

(pressure)\propto (temperature) (at constant Volume)

\frac{P_1}{T_1}=\frac{P_2}{T_2}

T_2=\frac{P_2\times T_1}{P_1}=\frac{1.8710 atm\times 273.15 K}{1.0001 atm}=510.73 K= 237.57^oC (T(^oC)=T-273.15 K)

At 237.57^oC  food will cook in the pressure cooker set on high.

8 0
3 years ago
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Empirical formula for 6. 63.52% Fe, 36.48% S
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5g NaOH x 1 mol NaOH/ 39.99g NaOH = 0.125 mol NaOH 
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Answer:

i think the answer is the last one.

The water molecules move by active transport into the cell from high water concentration to low water concentration.

Explanation:

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