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Stella [2.4K]
2 years ago
12

The distance time graph for four objects is shown below:

Biology
2 answers:
Digiron [165]2 years ago
7 0
Object A because see how it’s a straight line that mean it’s not stopping no changing speeds
Damm [24]2 years ago
5 0

Answer:

Object A

Explanation:

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Name one reason why a controlled experiment may not be possible
finlep [7]

there could be harmful chemicals

5 0
3 years ago
4. What is the mass of N2H4 gas in a 350.0 mL container at 50.0 °C, if the pressure of the gas is
vovangra [49]

Answer:

0.36g

Explanation:

Given parameters and conversion to standard unit

 To solve this problem we must assume ideality

Volume of N₂H₄  =  350mL  = 0.35dm³

Temperature of container  = 50°C  = 50 + 273  = 323K

Pressure  = 885torr;

               760torr  = 1atm

               885torr  = \frac{760}{885}   = 0.86atm

Unknown:

Mass of the compound  = ?

Solution:

The mass of the compound can be derived using the expression below;

         Mass = number of moles x molar mass

molar mass of N₂H₄ = 2(14) + 4(1)  = 32g/mol

To find the number of moles;

       PV  = nRT

          n  = \frac{PV}{RT}

P is the pressure

V is the volume

R is the gas constant = 0.082atmdm³mol⁻¹K⁻¹

T is the temperature

         n  = \frac{0.86 x 0.35}{0.082 x 323}   = 0.01mole

So,

    Mass  = 0.01 x 32  = 0.36g

5 0
2 years ago
Humans can over use the land which can speeds_____________ and could possibly lead to the land not being able to be used as farm
Aloiza [94]

Answer:

mathematics

life sciences

8 0
2 years ago
What other body systems are related to the digestive system
nika2105 [10]

The digestive system enlists the aid of the cardiovascular system and the nervous system. Blood vessels of the digestive system widen to transport more blood.

8 0
2 years ago
What distance would be covered in 10
Brrunno [24]

Answer:

The correct answer would be - 5000 meter or 5 kilometers

Explanation:

Given:

Speed = 500 meter/minute

Time = 10 minutes

Distance would be covered = ?

Formula used:

speed = distance/ time

then, Distance = speed*time

Solution:

Putting values in the provided formula:

Distance = speed*time

distance = 500*10 meters

              = 5000 meters or 5 kilometer (1000 meter = 1 kilometer)

6 0
3 years ago
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