Solve and show work. Li2S + 2 HNO3 --> 2 LiNO3 + H2S (a) Calculate the mass of lithium sulfide that will react with 250 mL of 0.65 M nitric acid (b) How many mL of 9.6 M HNO3 are needed to make 250 mL of 0.65 M HNO3 solution? (c) How many grams of nitric acid are needed to make 750 mL of 9.6 M HNO3.

Answers

Answer 1
Answer:

Li2S + 2 HNO3 --> 2 LiNO3 + H2S

Li2 S  +   H2 N2 O2  -->   Li2 N2 O5   +   H2 S

Li S + H2 N2 O5 -> Li N2 O5 + H2 S

Li2 S2 + H4 N4 O10 -->  Li2 N4 O10 + H4 S2

Li^2  S^2  +  H^4 N^4 O^10  --> Li^2 N^4  O^10  +  H^4 S^2


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If solving for the slope of the best fit line it is a good choice to choose the points closest to the line or points on the line.T OR F?

Which statement about one atom of an element identifies the element?(1) The atom has 1 proton. (2) The atom has 2 neutrons.(3) The sum of the number of protons and neutrons in the atom is 3.(4) The difference between the number of neutrons and protons in the atom is 1.

Answers

the atom has one proton 

Einstein’s Theory of Relativity was built on the research and ideas of other scientists. The Theory of Relativity proposes that the speed of light is a constant. Which of the following statements explains why this is considered to be a scientific theory?

Answers

ANSWER

Theory of relativity.

In the year 1905 a famous mathematician and physicist named Albert Eisenstein gave a theory which shows relation between time and motion.

yes i am talking about special theory of relativity.

actually theory of relativity is divided in two parts

1. special theory of relativity

and

2. general theory of relativity.

✔special theory of relativity is based on the time and motion. 

there are two frame of references.

1. inertial frame of reference

and

2. inertial frame of reference.

in inertial frame of reference we talk about when body is moving with constant velocity.

and

in non inertial frame of reference we talk about unconstant velocity.

in the special theory it is used that the time and motion are relative. 

and there is a postulate that

✳ Nothing can travel faster than the speed of light that is.

299692458m/s and universe is limited at this speed so if a object moves near the speed of light then the time slows down for that object in order to maintain that speed.

Now

Theory of general relativity.

✔ after giving special relativity Einstein was not satisfied and wanted to know about how gravitational force can affect time.

so he gave general theory of relativity.

in this we talk about the gravitational force.

space time curvature 

fabric of cosmos and many more thing

in this Einstein showed that how gravitational force affect the time and also showed that the planets revolve around the sun because of the curve in space time

What is the following statements?

Why does changing the volume of a container change the pressure of the gas in it?

Answers

Answer:

the answer is D

Explanation:

i did the test

When volume is decreased, the gas has less space in which to move, and therefore pressure increases as the gas is pushed together.

Given that ka for hclo is 4.0 x 10-8 at 25 °c, what is the value of kb for clo- at 25 c

Answers

The Ka of HClO is 4.0 x 10^-8 at 25 C. The dissociation of HClO is:

HClO + H2O ---> H+ + ClO -    T = 25 C

Ka = 4.0 x 10^-8 = [H+][ClO-]/[HClO]

pH = -log[4.0 x 10^-8]
pH = 7.40
pOH = 14 - 7.40
         = 6.60
Kb = 10^-6.6

The root word gastro- means:
A. Stomach
B. Cook
C. Organ
D. Food

Answers

Answer:

The correct answer is A. Stomach

Explanation:

The prefix gastro- is derived from the Greek word gastrós or gaster wich means stomach, the organ responsible for digestion of food. The most common examples are:

- Gastrointestinal: related to stomach and intestines

- Gastritis: inflammation of the stomach

- Gastroenteritis: inflammation of both stomach and intestines

A combining form with the meaning "stomach," is often used to create compound words, such as gastrology. Here the root word gastro means Stomach. The correct option is A.

The stomach is a muscular bag-like organ that is located on the left side of the upper abdomen. The esophageal sphincter, a valve, is used by the oesophagus to transfer food to the stomach. Acid and digestive enzymes are produced in the stomach to aid in meal digestion.

Storing and digesting the food and liquid consumed during meals is the stomach's main job. In order to aid in the digestion of food and other external items like germs, it creates hydrochloric acid and enzymes.

Thus the correct option is A.

To know more about stomach, visit;

brainly.com/question/2288474

#SPJ6

The normal boiling point corresponds to the temperature at which both the liquid and gas are under the standard atmospheric pressure of 1 atm.TRUE

FALSE

Answers

TRUE. (Lorenzo Romano Amadeo Carlo Avogadro) Ideal Gas Law that defined as one in which all collisions between atoms or molecules are perfectly elastic in which there are no intermolecular attractive forces.  In such a gas, all the internal energy is the form of kinetic energy and any change in internal energy is accompanied by a change in temperature. That characterized by three state variables: absolute pressure (P) = 1 atm, volume (V) = 22.4 L and absolute temperature (T) = 273 K.