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Lelechka [254]
3 years ago
7

What is the mass of a ink pen with triple beam balance

Chemistry
1 answer:
Gnesinka [82]3 years ago
7 0
The mass of an ink pen with a triple beam balance if all the weights positioned to the right would be a maximum of 610 grams which sounds rather heavy for an ink pen but in the absence of necessary information it seems that that would have to be the answer.
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How do they become negative ions?
LekaFEV [45]

Answer:

An atom that gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion. Picture 1.8 Some atoms lose electrons and become positive ions. Others gain electrons and become negative ions.

Explanation:

...

6 0
4 years ago
Why is it impossible to have an undiscovered element that would fit between sodium and magnesuim
Stolb23 [73]

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4 0
3 years ago
What's the control group and experiment group
Alekssandra [29.7K]
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6 0
3 years ago
You have 16.6 g of water at 40.2 C. How many Joules are needed to warm the water to 44.8 C?
iragen [17]

Answer:

Q = 319.49 J

Explanation:

Given that,

Mass, m = 16.6 g

Initial temperature, T_i=40.2^{\circ} C

We need to find the heat needed to warm the water to 44.8 °C. The formula that is used to find the heat required is given by :

Q=mc\Delta T\\\\Q=mc(T_f-T_i)\\\\Q=16.6\ g\times 4.184\ J/g^{\circ} C\times (44.8-40.2)^{\circ} C\\\\Q=319.49\ J

So, 319.49 J of heat is needed to warm water.

3 0
3 years ago
The radioisotope radon-222 has a half-life of 3.8 days. How much of a 73.9-g sample of radon- (3 222 would be left after approxi
Novay_Z [31]

Answer:

1.115 g

Explanation:

Applying,

R = R'2^{n/t}................... Equation 1

Where R = original sample of radon-222, R' = sample of radon-222 left after decay, n = Total time, t = half-life.

make R' the subject of the equation

R' = R/(2^{n/t})............... Equation 2

From the question,

Given: R = 73.9 g, n = 23 days, t = 3.8 days.

Substitute these values into equation 2

R' = 73.9/(2^{23/3.8})

R' = 73.9/2^{6.05}

R' = 1.115 g

6 0
3 years ago
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