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maksim [4K]
2 years ago
7

The mass of an object is measured in _____.

Chemistry
2 answers:
sweet-ann [11.9K]2 years ago
5 0

d I hope this helps you I hope it got it right

Burka [1]2 years ago
4 0

Answer:

kilograms

Explanation:

The basic SI unit for mass is the kilogram (kg), but smaller masses may be measured in grams (g). To measure mass, you would use a balance. In the lab, mass may be measured with a triple beam balance or an electronic balance, but the old-fashioned balance pictured below may give you a better idea of what mass is.

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Any change in average weather conditions on Earth that lasts for at least several decades is called
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Answer:climate change

Explanation:

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3 years ago
What is the product of a force and the time during which the force acts
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Impulse is the product of a force and the time during which that force acts on a body.

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3 years ago
Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid. HCl(aq), as described by
melisa1 [442]

Answer:

0.88 g

Explanation:

Using ideal gas equation to calculate the moles of chlorine gas produced as:-

PV=nRT

where,

P = pressure of the gas = 805 Torr

V = Volume of the gas = 235 mL = 0.235 L

T = Temperature of the gas = 25^oC=[25+273]K=298K

R = Gas constant = 62.3637\text{torr}mol^{-1}K^{-1}

n = number of moles of chlorine gas = ?

Putting values in above equation, we get:

805torr\times 0.235L=n\times 62.3637\text{ torrHg }mol^{-1}K^{-1}\times 298K\\\\n=\frac{805\times 0.235}{62.3637\times 298}=0.01017\ mol

According to the reaction:-

MnO_2+4HCl\rightarrow MnCl_2+2H_2O+Cl_2

1 mole of chlorine gas is produced when 1 mole of manganese dioxide undergoes reaction.

So,

0.01017 mole of chlorine gas is produced when 0.01017 mole of manganese dioxide undergoes reaction.

Moles of MnO_2 = 0.01017 moles

Molar mass of MnO_2 = 86.93685 g/mol

So,

Mass=Moles\times Molar\ mass

Applying values, we get that:-

Mass=0.01017moles \times 86.93685\ g/mol=0.88\ g

<u>0.88 g of MnO_2(s) should be added to excess HCl (aq) to obtain 235 mL of Cl_2(g) at 25 degrees C and 805 Torr.</u>

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3 years ago
Vocabulary
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Answer:

the only one i really know is magna carta which is an article created so that the king's power could be limited or something

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3 years ago
I don't know if I'm doing this right can someone help me out
Murrr4er [49]
YOUR DOING IT RIGHT CAUSE ITS RIGHT

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