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2 years ago

If you wanted to know how big a tiger is which measurements would you use?

Chemistry

2 answers:

enot [183]2 years ago

4 0

Answer:

meter kilogram are the two measurement units which can be used to estimate the length and weight of the tiger

Explanation:

In general, measurement units are chosen such that they closely match the object that is to be measured.

In this case, in order to estimate how 'big' the tiger is there are are two units:

-one which measures the length/height of the tiger expressed in units of meter(m)

- the other measures the weight of the tiger which is expressed in units of kilogram (kg)

Elan Coil [88]2 years ago

3 0

I think the answer is
D. Meter Second
hope this helps.

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Write down examples of some natural acids and natural bases. Also write use of them.

trasher [3.6K]

Answer:

Formic acid, citric acid, Oxalic acid, washing soda, baking soda, etc. can be some examples of natural acids and natural bases. They both have domestic, industrial, and various other purposes.

Explanation:

<h3>NATURAL ACIDS:</h3>

There are lots of natural acids present in our nature. Some of them are the following:

> Formic acid

USE: It is used in the stimulation of oil and gas wells as it is less reactive towards the metal.

> Citric acid

USE: It is considered as the best rust remover as it doesn't harm the metal just remove the rust.

> Oxalic acid

USE: It easily remove iron and ink stains and that's why it is used as an acid rinsing material in Laundries.

<h3>NATURAL BASES:</h3>

There is a variety of natural base found in our nature which founds a lot of uses in day to day life. some of them are the following:

> Washing soda

USE: It is used in commercial detergent mixture to treat hard water.

> Baking soda

USE: It is the best rising agent used mostly in cooking and for domestic purposes like removing stains, etc..

3 0

3 years ago

When a 0.245-g sample of benzoic acid is combusted in a bomb calorimeter, the temperature rises 1.643 ∘C . When a 0.260-g sample

sveticcg [70]

Answer:

The heat of combustion per moles of caffeine is 4220 kJ/mol

Explanation:

Step 1: Data given

⇒ When benzoic acid sample of 0.245 grams is burned the temperature rise is 1.643 °C

⇒ When 0.260 gram of caffeine is burned, the temperature rise is 1.436 °C

⇒ Heat of combustion of benzoic acid = 26.38 kJ/g

Step 2: Calculate the heat released: for combustion of benzoic acid

0.245 g benzoic acid * 26.38 kJ/g = 6.4631 kJ

Step 3: Calculate the heat capacity of the calorimeter:

c = Q/ΔT

Q = 6.4631 kJ / 1.643°C = 3.934 kJ/ °C

Step 4: Calculate moles of a 0.260 g sample of caffeine:

Moles caffeine = Mass caffeine / Molar mass caffeine

0.260 grams/ 194.19 g/mol = 0.0013389 moles

Step 5: Calculate heat released: for combustion of caffeine

Q = c * ΔT

Q = 3.934 kJ/°C * 1.436 °C = 5.65 kJ

Step 6: Calculate the heat of combustion per mole of caffeine

5.65 kJ / 0.0013389 moles = 4219.9 kJ/mol ≈ 4220 kJ/mol

The heat of combustion per moles of caffeine is 4220 kJ/mol

4 0

3 years ago

The scientific method includes which of the following? Select all that apply. question analysis hypothesis theory

adell [148]

a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

8 0

2 years ago

Read 2 more answers

What is the condensed structural formula of the product of the reaction of 2,7-dimethyl-4-octene with hydrogen and a metal catal

gavmur [86]

The condensed structural formula of the product of the reaction of 2,7-dimethyl-4-octene with hydrogen and metal catalyst.

Ch3 CH(CH3) CH2 CH2 CH2 CH2 CH(CH3) CH3

Equation is as follows

CH3 CH(CH3) CH2 C=C CH2 CH(CH3) CH3 + H2→

CH3 CH(CH3)CH2 CH2 CH2 CH2 CH(CH3) CH3

metal catalyst example is nickel and the name of structure formed is
2,7- dimethyl octane

6 0

3 years ago

Which is true of the enthalpy of a reaction?

salantis [7]

Answer: I think it's B

6 0

2 years ago