3 years ago

An object that moved as a result of a machine working is called the ____.

Chemistry

2 answers:

ivanzaharov [21]3 years ago

7 0

B load is the answer hope this helps

skad [1K]3 years ago

4 0

Answer:

I'd say the answer is B) Load.

Hope this helps. :-)

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Which occurs in the half-reaction Na(s) → Na+

Schach [20]

Answer:

Explanation:

don't understand properly but it is c) cause they go through gens

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3 years ago

What is the oxidation number for each atom in NH4CI?

Alika [10]

N = +3, H = +1 ,Cl = -1

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4 years ago

14. In the lab, an experimenter mixes 75.0 g of water (initially at 30oC) with 83.8 g of a solid metal (initially at 600oC). At

avanturin [10]

Answer:

Tungsten is used for this experiment

Explanation:

This is a Thermal - equilibrium situation. we can use the equation.

Loss of Heat of the Metal = Gain of Heat by the Water

$-Q_{m}=+Q_{w}\\$

Q = mΔT $C_{p}$

Q = heat

m = mass

ΔT = T₂ - T₁

T₂ = final temperature

T₁ = Initial temperature

Cp = Specific heat capacity

Metal

m = 83.8 g

T₂ = 50⁰C

T₁ = 600⁰C

Cp = $x$

Water

m = 75 g

T₂ = 50⁰C

T₁ = 30⁰C

Cp = 4.184 j.g⁻¹.⁰c⁻¹

$-Q_{m}=+Q_{w}\\$

⇒ - 83.8 x $x$ x (50 - 600) = 75 x 4.184 x (50 - 30)

⇒ $x$ = $\frac{6276}{46090} = 0.13$ j.g⁻¹.⁰c⁻¹

We know specific heat capacity of Tungsten = 0.134 j.g⁻¹.⁰c⁻¹

So metal Tungsten used in this experiment

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4 years ago

How many neutrons and protons does a neutral atom of sodium with an atomic mass number of 23 have? A. 22 neutrons; 11 protons B.

atroni [7]

In order to find out how many protons a sodium atom has, you have to look at the periodic table. Sodium is Na on the periodic table and you look for the number on the top of the symbol and you can see that it has 11 protons. To find out how many neutrons, you have to subtract 11 from the mass number, which is 23. 23-11 = 12.

12 neutrons; 11 protons

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4 years ago

Help asap!!

Daniel [21]

Answer:

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Explanation:

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3 years ago