Answer:
Transport of gases and nutrients
Explanation:
The circulatory system includes all the vessels that transport blood around the body as well as the blood itself. Sometimes the heart and lungs are also included as part of the circulatory system.
The vessels of the circulatory system are involved in the transport of blood throughout the body. Blood carries the necessary gases to the cells (oxygen) and waste products (CO2) away. It also carries important nutrients to the cells and transports chemical messengers in the form of hormones to their sites of action.
Answer:
The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.
Answer:
The temperature is 298.9K = 25.75 °C
Explanation:
Step 1: Data given
Volume of the flask = 1.00 L
Number of moles oxygen = 0.0400 moles
Pressure = 0.981 atm
Step 2: Calculate the temperature
p*V = n*R*T
⇒with p = the pressure of oxygen gas = 0.981 atm
⇒with V = the volume of the flask = 1.00 L
⇒with n = the number of moles of oxygen = 0.0400 moles
⇒with R = the gas constant = 0.08206 L*atm/mol*K
⇒with T = the temeprature = TO BE DETERMINED
T = (p*V) / (n*R)
T = (0.981 atm * 1.00 L) / (0.0400 moles * 0.08206 L*atm/mol*K)
T = 298.9 K
The temperature is 298.9K = 25.75 °C
the branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.
