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Papessa [141]
3 years ago
6

True or false help please I’ll give you brainly

Chemistry
2 answers:
Olin [163]3 years ago
8 0

Answer:

true

Explanation:

dimulka [17.4K]3 years ago
5 0
The answer is true.
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A gas occupies 25,3 mL at a pressure of 152 kPa. Find the volume if the pressure is
sleet_krkn [62]

Answer:

This is under gas laws. check it out

3 0
3 years ago
Jams, jellies, preserves, honey, and other food with high sugar content hardly ever become contaminated by bacteria, even when t
creativ13 [48]

Answer:

undergo death as result of the water loss from cell

Explanation:

The ingredients such as honey, jellies, Jams, preserves and other food which have high sugar content are contaminated hardly by the bacteria because due to the presence of high amount of the sugar and carbohydrates, the solution of the them becomes hypertonic in nature and if a bacteria acts on such solution, the result is the loss of the water from their cell and ultimately the bacteria dies. So, they remain fresh even if their containers are left open at the room temperature.

8 0
3 years ago
1. How much heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C?
diamong [38]

Answer: An amount of 40980.48 J/g^{o}C heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C.

Explanation:

Given: mass of lead = 4.64 kg

Convert kg into grams as follows.

1 kg = 1000 g\\4.64 kg = 4.64 kg \times \frac{1000 g}{1 kg}\\= 4640 g

T_{1} = 150^{o}C

T_{2} = 219^{o}C

The standard value of specific heat of lead is 0.128 J/g^{o}C.

Formula used to calculate heat is as follows.

q = m \times C \times \Delta T

where,

q = heat energy

m = mass of substance

C = specific heat of substance

\Delta T = change in temperature

Substitute the value into above formula as follows.

q = m \times C \times \Delta T\\= 4640 g \times 0.128 J/g^{o}C \times (219 - 150)^{o}C\\= 40980.48 J/g^{o}C

Thus, we can conclude that 40980.48 J/g^{o}C heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C.

8 0
3 years ago
What is the pOH if the ph=9.7
Serhud [2]

Answer:

pOH = 4.3

Explanation:

pOH + pH = 14... Always

14-9.7 = 4.3

7 0
4 years ago
Read 2 more answers
Organic compounds are composed of __________ and at least one hydrogen atom.
Anettt [7]
I think the correct word to fill in the blank would be carbon. Organic compounds are composed of carbon and at least one hydrogen atom. It is basically any compound that would contain carbon and covalently bonded to other elements or atoms usually these are hydrogen, nitrogen and oxygen. All living things are based on these compounds. These are the building blocks of organic chemistry. These compounds can be seen anywhere in Earth. May it be animals, plants, the soil, sugar, microorganisms and even in humans. Examples of these compounds are methanol, DNA, glucose, hexane, acetic acid, butane and the like.
3 0
3 years ago
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