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4 years ago

Weight is a measure of: inertia force matter mass

Chemistry

2 answers:

erica [24]4 years ago

4 0

Weight is a measure of force

Ivanshal [37]4 years ago

4 0

Answer:

Weight is a measure of force

Explanation:

In general force is defined as the mass multiplied by the acceleration as following:

$F=m*a$

For weight, the acceleration is the gravitational force:

$W=m*g$

It means the weight is the mass of the object multiplie by the gravitational force.

For example if we have an object with mass 10kg, the weight will be:

$W=10kg*9.8\frac{m}{s^{2}}$

$W=98\frac{kg.m}{s^{2}}$

The units for the weight are Newtons (N) that will be expressed as S.I units as

$N=\frac{kg.m}{s^{2}}$

So, the weight for the example, will be

W=98N

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If the heat of fusion of ice is 335 j/g, how much heat is needed to melt 4.36 g of ice at 0.0 °c?

Vadim26 [7]

Heat=335*4.36
=1460.6 joules

7 0

3 years ago

7. This part of the brain controls memory, and long term abuse of marijuana can permanently

eduard

Answer:

Hippocampus

Explanation:

The main parts of the brain involved with memory are the amygdala, the hippocampus, the cerebellum, and the prefrontal cortex.

Memory impairment from marijuana use occurs because THC alters how the hippocampus, a brain area responsible for memory formation, processes information.

7 0

3 years ago

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What is the pH of a 0.033 M KOH solution

Natalija [7]

Answer:
p
H
≈
11.5
Explanation:
When put in water, the
K
O
H
dissolves into
K
+
and
O
H
−
ions, with the latter increasing the
p
H
of the solution.
As hydroxides can be considered strong bases, it will completely dissociate into the water solution, and form an equal amount of moles of hydroxide ions:
0.003 mol of
O
H
−
.
Now,
p
O
H
=
−
log
[
O
H
−
]

p
O
H
=
2.522
And if we assume this is done under standard conditions:
p
O
H
+
p
H
=
14

p
H
=
14
−
2.522

p
H
≈
11.5

Hope it helped
Have a nice day☀️

3 0

3 years ago

What mass of aluminum at 144 Celsius will increase the temperature of 100 g of water by from 10 C to 15 C?

Andrej [43]

Answer:

$m_{Al} = 18.019\,g$

Explanation:

There is a heating process between an aluminium piece and water, which is described by the First Law of Thermodynamics:

$Q_{Al} = - Q_{w}$

$m_{Al}\cdot c_{Al}\cdot (T_{o,Al}-T) = m_{w}\cdot c_{w}\cdot (T-T_{o,w})$

The mass of the aluminium piece is therefore cleared and known variables are substituted:

$m_{Al} = \frac{m_{w}\cdot c_{w}\cdot (T-T_{o,w})}{c_{Al}\cdot (T_{o,Al}-T)}$

$m_{Al} = \frac{(100\,g)\cdot \left(4.184\,\frac{J}{g\cdot^{\circ}C} \right)\cdot (15^{\circ}C-10^{\circ}C)}{\left(0.900\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot (144^{\circ}C-15^{\circ}C)}$

$m_{Al} = 18.019\,g$

5 0

3 years ago

Please help asap. Brainliest to correct.

Law Incorporation [45]

Answer:

I guess this answer is c

7 0

3 years ago

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