<u>Answer:</u> All the flasks contain same number of molecules.
<u>Explanation:</u>
STP conditions are called as standard temperature and pressure conditions.
At this condition, 1 mole of a gas occupies a volume of 22.4 L
Also,
The temperature at this condition is taken as 273.15 K and the pressure at this condition is taken as 1 atm.
According to mole concept:
1 mole of a gas occupies number of molecules
We are given:
Three different flasks having three different gases at STP
So, all the flasks will have same number of molecules that is
Hence, all the flasks contain same number of molecules.
The specific heat of the metal : 0.384 J/g° C,
and a metal with a specific heat of 0.384 is copper
<h3>Further explanation </h3>
The law of conservation of energy can be applied to heat changes, i.e. the heat received / absorbed is the same as the heat released
Q in = Q out
Q lost(metal) = Q gained(water)
Heat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
Answer:
Explanation:Until the past decade, scientists, research institutions, and government agencies relied solely on a system of self-regulation based on shared ethical principles and generally accepted research practices to ensure integrity in the research process. Among the very basic principles that guide scientists, as well as many other scholars, are those expressed as respect for the integrity of knowledge, collegiality, honesty, objectivity, and openness. These principles are at work in the fundamental elements of the scientific method, such as formulating a hypothesis, designing an experiment to test the hypothesis, and collecting and interpreting data. In addition, more particular principles characteristic of specific scientific disciplines influence the methods of observation; the acquisition, storage, management, and sharing of data; the communication of scientific knowledge and information; and the training of younger scientists.1 How these principles are applied varies considerably among the several scientific disciplines, different research organizations, and individual investigators.
Answer:
Explanation:
Regardless of the type of gas, 1 mole at standard temperature and pressure (STP) occupies a volume of 22.4 liters. In this case the gas is helium (He).
We can set up a ratio.
Multiply by the given number of moles.
The moles of helium will cancel.
Multiply.
5.25 moles of helium gas at STP is 117.6 liters of helium.