1. Aqueous solutions of chromium(III) iodide and sodium hydroxide react to give a chromium(III) hydroxide precipitate and aqueous sodium iodide.2. Aqueous solutions of iron(II) sulfate and barium nitrate react to give a barium sulfate precipitate and aqueous iron(II) nitrate.

Express your answer as a chemical equation. Identify all of the phases in your answer. Enter noreaction if there is no reaction.

Answers

Answer 1

Answer: 1- The original equation of the reaction is :
CrI3 + NaOH → Cr(OH)3 + NaI
but this is not a balanced equation so we have to balance it :
-first, we have 3 I atoms on the left side and 1 I atom on the right side
so to makes the no.of atoms on both sides equal we put 3NaI instead of NaI
CrI3 + NaOH → Cr(OH)3 + 3NaI
- then no.of Na atoms on the left side is 1 and on the right side is 3 so, we put 3NaOH instead of NaOH
CrI3 + 3NaOH → Cr(OH)3 + 3NaI
now we have :
Cr atoms = 1 on both sides
I atoms = 3 on both sides
Na atoms = 3 on both sides
O&H atoms = 3 on both sides
So the final balanced equation of our reaction is:
CrI3(aq) + 3NaOH(aq) → Cr(OH)3(s) + 3NaI(aq)

2 - the chemical equation of the second reaction is :
FeSO4 + Ba(NO3)2 → BaSO4 + Fe(NO3)2
let's see if it is the balanced equation or not?
we have:
no of Fe atom on both sides = 1
no of (SO4) atom on both sides are equal
no of Ba atom on both sides = 1
no of (NO3) group on both sides= 2
so this is our balanced equation, so the final equation for this reaction is:
FeSO4(aq) + Ba(NO3)2(aq) →BaSO4(s) + Fe(NO3)2(aq)

Related Questions

Changes in DNA are known as mutations and can be sometimes produce beneficial changes in population. A mutant form of the normally light-colored peppered moth is dark-colored. The dark-colored moth blends in with soot-covered trees in heavily polluted areas.Why would the dark-colored mutation be beneficial in a polluted area?
What property of nonmetals can be determined using a flashlight?
What skills and tools do scientists use?
What is an occurrence of failure of Expansion Joints in Railways and Tracks. How common is it? What problems does it cause? What can be done to solve the problem?
15. Frog lungs are poorly developed. How does this relate to their skin being thin and moist?

What examples does
- Making Materials
- Moving Materials
- Removing Waste

Answers

Answer:

You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body. Recall that carbon dioxide travels through the blood and is transferred to the lungs where it is exhaled

Moving Materials include aluminum foil tape, shipping tape, box tape and duct tape. Moving labels take the guesswork out of the moving process.

if there are 14 chromosomes in pea plant cells,how many chromosomes are present in a sex cell of a pea plant?

Answers

If there are 14 chromosomes in pea plant cells, there are 7 chromosomes present in a gamete cell of a pea plant.

What are chromosomes?

Chromosomes are thread like structure which are present in pair.

The chromosomes contain re genes and characters of the person.

The process of meiosis, result in half of chromosome in the daughter cells.

Thus, there would be 7 chromosomes present.

Learn more about chromosomes

brainly.com/question/296477

there would be 7- this would be the process of meiosis, which would result in 4 haploid cells (each would have half the number of chromosomes as the parent (or 7), as meiosis is sex cell division) the other type of cell division is called mitosis and results in two daughter cells identical to the parent cell (2 cells, each with 14 chromosomes)

. Write the following isotope in nuclide notation (e.g., “ ”): copper-70

Answers

Answer:

$^(70)_(29)Cu$

Explanation:

The nuclide isotope notation represents the isotope by its chemical symbol preceded by a superscript (to the left of the chemical symbol) showing the mass number and a subscript (also the the left of the chemical symbol) showing the atomic number (number of protons).

Copper-70:

Chemical symbol: Cu
Mass number: 70
Atomic number: 29 (the atomic number is found in any periodic table)

Nuclide notation:

$^(70)_(29)Cu$

Predict the formula of magnesium argonide

Answers

Answer:The formula of magnesium argonide is H2MgO

Explanation:

Answer:

H2MgO that is the answer. have a nice day.

What is called what a scientist personal opinion affects the way experimental results are reported?A. Bias
B. Classifying
C. Inductive reasoning
D. Procedure

Answers

Answer;

A. Bias

If the personal opinion of a scientist affects the way that the experimental results are reported, that is called bias.

Explanation;

-An experimenter bias, is a process where the scientists performing the research influence the results, in order to portray a certain outcome.

-Bias is among the factors that makes a qualitative research much more dependent upon experience and judgment than quantitative research.

-Bias in a research may arise from experimental errors and failure to consider all the possible variables and also when the researchers select the subjects that are more likely to generate the desired results.

The answer would be A.Bias because the scientist can form a Bias opinion based on his beliefs

An unknown material has a mass of 6.75g and a volume of 9 cm3. What is the density of the material? Round to the nearest tenth?

Answers

Answer is: the density of the material is 0.8 g/cm³.

m(material) = 6.75 g; mass of unknown material.

V(material) = 9 cm³; volume of unknown material.

d(material) = m(material) ÷ V(material).

d(material) = 6.75 g ÷ 9 cm³.

d(material) = 0.75 g/cm³; density of unknown material.

Other Questions

What is this a model of

What is the element?

Metals can be found____ the “staircase”in the periodic table. A. To the right of B. To the left ofC. On D. Above

How do you test a hypothesis using scientific inquiry