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Alina [70]
3 years ago
7

Which gas tank will open first ? oxygen or acetylene?

Chemistry
1 answer:
Soloha48 [4]3 years ago
3 0
Oxgyen will open first it will open b4 acetylene
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a 40-lb container of peat moss measure 14x20x30 inches and has an average density of 0.13 g/cm^3. how many bags of peat moss are
telo118 [61]

Volume of the peat moss = 14\times 20\times 30 inches

= 8400 in^{3}

Convert the above volume into cm^{3}

1 in^{3}= 16.4 cm^{3}

Thus, volume in cm^{3} is:

Volume of peat moss =  8400 in^{3}\times \frac{16.4 cm^{3}}{1 in^{3}}

= 137760 cm^{3}

Now,

Total volume by using area and depth of the peat moss = area of peat moss \times depth of peat moss

= (13 ft \times  25 ft)\times 1.9 inches

= (325 ft^{2})\times 1.9 inches

Convert above values in cm to get the value of volume in cm^{3}:

1 ft= 30.48 cm

1 in= 2.54 cm

Thus, volume in cm^{3} is:

Total volume = (325 ft^{2}\times\frac{(30.48 cm)^{2}}{(1 ft)^{2}})\times (1.9 in\times \frac{2.54 cm}{1 in})

= 301934.88 cm^{2}\times 4.826 cm

= 1457137.73088 cm^{3}

Now, number of bags is calculated by the ratio of total volume of the peat moss to the volume of the peat moss.

Number of bags  =\frac{total volume of peat moss}{volume of peat moss}

Substitute the values of volume in above formula:

Number of bags  = \frac{1457137.73088 cm^{3}}{137760 cm^{3}}

= 10.57

≅ 11 bags

Thus, number of bags of peat moss are needed to cover an area measure 13 ft by 25 ft to a depth of 1.9 inches are 11 bags.


4 0
3 years ago
The animal kingdom is divided into two small groups name these two smaller groups and give examples of each include the characte
Elina [12.6K]

Answer:

vertebrate and invertebrates

Explanation:

All Vertebrates  have a skeletal structure with a spinal backbone and well developed internal skeleton made up of bones and cartilage while Invertebrates have no backbone.

Vertebrate include fish, amphibians, reptiles, birds and mammals. Invertebrates include worms and jellyfish, spiders and crabs.

<u>common characteristics among vertebrates and invertebrates </u>

○ multi-cellular.

○ heterotrophs (cannot make their own food) and must get their energy by consuming plants or other animals.

○ obtain food and oxygen for energy,

5 0
3 years ago
Express 7.25 in scientific notation
sergeinik [125]
Considering that scientific notation has to move the decimal over so there is only one digit in the Tens place, that is the scientific notation.
8 0
3 years ago
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Which is an example of a heterogeneous catalyst?
N76 [4]
An example of a heterogeneous catalyst is a catalytic converter. A catalytic converter is an emissions control device that converts toxic pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction (oxydation or reduction). 
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3 years ago
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Which of the following is a negatively charged particle?
kirza4 [7]

Answer:

B. electron

Explanation:

B. electron

electron is a negatively charged particle

proton is a positively charged particle

7 0
3 years ago
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