Visitor activity

spmtn_dltrn

Public contributions from visitors who posted under the name spmtn_dltrn.

Questions 23
Answers 0

Recent questions

Latest questions from spmtn_dltrn

"With no steady hand to guide him, the boy takes naturally to idle ways. Caught in the street by the truant officer, or by the agents of the Children’s Societies, peddling, perhaps, or begging, to help out the family res...
1 answer
You are studying the boiling points of liquids with some fellow students. You have two liquids of different molecular weights, and you test each of them twice. You find that the one with a lower molecular weight also has...
1 answer
In one to two sentences, describe an experiment that would show that intramolecular forces (attractions between atoms within molecules) are stronger than intermolecular forces (attractions between molecules). Make your a...
1 answer
Measure and compare the dissolved ion concentrations (for example Na+ and Cl−) and the electrical conductivity of samples of saltwater and freshwater; saltwater will have much higher ion levels and conductivity. Because...
1 answer
In one to two sentences, explain how to compare the strength of electrostatic forces between molecules in saltwater to the strength of electrostatic forces between molecules in freshwater. Include a description of the da...
1 answer
Some insects, such as water striders, are able to walk on water. In one or two sentences, make and justify a conjecture about a property of water that would allow the insect to walk on it. Make your answer simple, cohere...
1 answer
Pregnant Fossil May Shed Light on Animal Behavior" by PBS NewsHour Scientists have pieced together the first-ever fossil of a pregnant plesiosaur, a giant Mesozoic sea reptile from the Cretaceous Era, with an embryo stil...
1 answer
The animal, which roamed the seas 78-million years ago, is about 15-feet long — the length of a minibus — and bones indicate that the baby plesiosaur would have been as long as six feet when born. The finding, published...
1 answer
Zn+CuSO4→ZnSO4+Cu Zinc (Zn) reacts with copper sulfate (CuSO4) to form zinc sulfate (ZnSO4) and copper (Cu). A classmate tells you this is a reaction in a galvanic cell. In three to five sentences, describe how you know...
1 answer
Zn+CuSO4→ZnSO4+Cu Zinc (Zn) reacts with copper sulfate (CuSO4) to form zinc sulfate (ZnSO4) and copper (Cu). A classmate tells you this is a reaction in a galvanic cell. In three to five sentences, describe how you know...
1 answer
H2(g)+I2(g)→2HI(g) A student makes the following statements: Hydrogen always has the same oxidation number, so it has an oxidation number of +1 in both the reactant H2 and product HI. Iodine is in Group VIIA, so it has a...
1 answer
Ba(ClO3)2→____+3O2 In one or two sentences, identify the type of reaction that is occurring and identify the other product. Make your answer simple, coherent, and intended for 9th grade.
1 answer
Use the reactions to complete the activity.HCl+NaOH→NaCl+H2OH2SO4+NaOH→2NaSO4+2H2OA student sets up a titration apparatus with 25 mL of hydrochloric acid in the flask. The student performs the titration using 0.050 M sod...
1 answer
A chemical reaction produces formaldehyde, CH2O. Carbon is in Group 14, oxygen is in Group 16, and hydrogen is in Group 1 on the periodic table. In one or two sentences, describe the bonds found in a molecule of formalde...
1 answer
Methane (CH4) is a gas that is found in small quantities in Earth’s atmosphere. Are the bonds in methane ionic or covalent according to their electronegativities, and how can one carbon atom bond with four hydrogen atoms...
1 answer
Methane (CH4) is a gas that is found in small quantities in Earth’s atmosphere. Are the bonds in methane ionic or covalent according to their electronegativities, and how can one carbon atom bond with four hydrogen atoms...
1 answer
Magnesium hydroxide reacts with nitric acid to produce magnesium nitrate and water. Mg(OH)2+2HNO3→Mg(NO3)2+2H2O In one to two sentences, explain how because this chemical equation is balanced, it demonstrates that matter...
1 answer
In 3–4 sentences, predict how phosphorus and chlorine would bond. Explain why they would bond that way. Please make your answer simple, coherent, and intended for 9th grade.
1 answer
In 3–4 sentences, predict how phosphorus and chlorine would bond. Explain why they would bond that way. Please make your answer simple, coherent, and intended for 10th grade.
1 answer
Currently, Puerto Rico is a Commonwealth. In 3-4 sentences, What are three options for the future political status of Puerto Rico? Stay in the Commonwealth, join the United States, become independent
1 answer
What can ecotourists discover at Los Haitises National Park? In 4-5 sentences, answer this question simply, coherently, and intended for 9th grade. Please include information about birdwatching, the rainforests and water...
1 answer
What can ecotourists discover at Los Haitises National Park? In 4-5 sentences, answer this question simply, coherently, and intended for 9th grade.
1 answer
In 4-5 sentences, answer this question. Make your answer simple, coherent, and intended for 9th grade. What can ecotourists discover at Los Haitises National Park?
1 answer

Recent answers

Latest answers from spmtn_dltrn

No public answers found for this visitor name.