CHEMISTRY HIGH SCHOOL

What is the total number of grams of NaI(s)needed to make 1.0 liter of a 0.010 M solution?
(1) 0.015 (3) 1.5
(2) 0.15 (4) 15

Answers

Answer 1
Answer: You have to multiply. That is molecules x ram = 0.01 * 150 = 1.5So your answer is 3) 1.5.

Related Questions

Which of the following is a synthesis reaction?C2H4 + 3O2 yields 2CO2 + 2 H2O 2HCl yields H2 + Cl2 2K + 2HCl yields 2KCl + H2 SO3 + H2O yields H2SO4
Compare the shape and volume of solids, liquids and gases.
How many moles of Cr are in 156 g of the element?a. 1.0 mol b. 3.0 mol c. 6.5 mol d. 156 mol
Which compound is an example of a binary ionic compound?Question 6 options: H2O H2SO4 MgF2 SF6
A solution with a pH of 8.0 isa. acidic. b. neutral. c. weakly basic. d. strongly basic.

How many moles of h2o are produced when 3.25 moles of o2 react in 2c2h6 + 7o2 ---> 4co2 + 6h2o

Answers

Answer:

2.78 moles of water are produced.

Explanation:

Given data:

Number of moles of H₂O produced = ?

Number of moles of oxygen react = 3.25 mol

Solution:

Chemical equation:

2C₂H₆ + 7O₂       →     4CO₂ + 6H₂O

Now we will compare the moles of water with oxygen.

                O₂          :          H₂O

                 7            :           6

               3.25        :           6/7×3.25 = 2.78 mol

At sea level, where the pressure was 104 kPa and temperature 21.1 ºC, a certain mass of air occupies 2.0 m3 . To what volume will the region expand when it has risen to altitude where the pressure and temperature are (a) 52 kPa, -5.0 ºC ( True or False )

Answers

Answer:

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is 3.64 m^3.

Explanation:

The combined gas equation is,

(P_1V_1)/(T_1)=(P_2V_2)/(T_2)

where,

P_1 = initial pressure of gas = 104 kPa

P_2 = final pressure of gas = 52 kPa

V_1 = initial volume of gas = 2.0m^3

V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 21.1^oC=273+21.1=294.1K

T_2 = final temperature of gas = -5.0^oC=273+(-5.0)=268 K

Now put all the given values in the above equation, we get:

(104 kPa* 2.0m^3)/(294.1 K)=(52 kPa* V_2)/(268 K)

V_2=3.64 m^3

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is 3.64 m^3.

If a liquid spontaneously turns into a gas below the critical temperature, it has evaporated.TRUE

FALSE

Answers

Answer:

FALSE

Explanation:

Critical temperature can be defined as the temperature at which a substance can exist as a liquid. Below the critical temperature, the substance will freeze and above the critical temperature, the substance will evaporate.

Note: Liquid cannot evaporate below it's critical temperature

False because if the water goes below critical temp it would be frozen

Most metals are not?

Answers

Most metals are not liquid at room temperature. They are typically solid and have a crystalline structure. Therefore, the correct option is option 3.

Metals are known for their high thermal and electrical conductivity, as well as their malleability and ductility. These properties allow metals to be shaped into various forms, such as wires and sheets, and conduct heat and electricity efficiently.

However, the majority of metals have a solid state at room temperature, with exceptions such as mercury, which is a liquid metal. The solid nature of metals is due to the metallic bonding between atoms, which involves the sharing of electrons within a sea of delocalized electrons.

Thus, the ideal selection is option 3.

Learn more about Metals, here:

brainly.com/question/29404080

#SPJ6

The complete question is -

Most metals are NOT-

Ductile

good conductors of heat and electricity,

liquid at room temperature,

malleable.
they are not liquid becuse they cant get spials.

Pls help its due in a few minutes

Answers

Answer:

Theory

Explanation:

In terms of energy and entropy, systems in nature tend to undergo changes toward(1) higher energy and higher entropy
(2) higher energy and lower entropy
(3) lower energy and higher entropy
(4) lower energy and lower entropy

Answers

In terms of energy and entropy, systems in nature tend to undergo changes toward lower energy and higher entropy. Entropy is important as it describes the flow and distribution of energy. For a process to to occur spontaneously, it is a necessary condition that the entropy of the system undergoing the process to increase. If the entropy decreases, then that process cannot occur spontaneously. It needs some work/ energy to be pumped in in order for the process to occur
In terms of energy and entropy, systems in nature tend to undergo changes toward lower energy and higher entropy.
Other Questions
Name at least three types of energy associated with a microwave
Why am i not good enough :,(
Temperature and kinetic energy have a relationship.
How do you find a Oxidation number