High School General Chemistry PreTest Final Questions help

October 20, 2020/in Science Assignment Help /by admin

Hello! I am a high school student in general chemistry in need of help with these questions for a PreTest final! This really needs to be done within the next few hours since its due tomorrow! Let me know if you have any questions! Thanks!!

H2(SO4)(aq) + 2NaOH(aq) >>> Na2(SO4)(aq) + 2H2O(l) (for questions 1-3)

1) A sample of sodium hydroxide has a pH of 13.2. What is its molarity?

2) A stock solution of 1.0M NaOH and an indicator are used to neutralize 30.0mL of a sulfuric acid solution. If is required 20.4mL of sodium hydroxide, what was concentration of the acid?

3) What is observed at the endpoint of a titration and what is true about the mixture at that time?

***

4) Write a balanced equation for the reaction between sodium chlordie and lead (ll) nitrate. Remember to balance the equation and include states of matter.

a) If 35.0g of NaCL and 45.9g of Pb(NO3)2 are combined and react, how many grams of NaNO3 will theoretically be produced? (consider limiting reactants)

b) If 20.0g of NaNO3 are actually produced in the problem above, what is the percent yield?

c)How many grams of excess reactant are left over?

d)If 75.36g of Pb(NO3)2 are added o 575g of water what is the new boiling point of the solution?

Reasons for choosing us

It doesn’t matter why you are looking for online academic assistance, be it a lack of time, a difficult topic or any other unpredictable circumstances we are here to help. We understand the pressure that comes with school life and the tough situation that might need a helping hand. Graduateassignmenthelp.com is more than a professional assistant. We are a team of a well-structured and qualified team, where the team is divided into different small teams responsible for various functions for the good of the whole hence guaranteeing our customers with high quality and timely results.

Safety and confidentiality

Trying to choose the best online academic writing services among thousands of them is not easy. You must have compared so many of them that you have lost count. Let’s narrow it down for you. When looking for an online academic writing service, quality, confidentially and originality are key. Purchasing a plagiarized paper or a resold paper can course your academics great harm. Please note that low prices don’t necessarily imply acceptable quality. That is why at graduateassignmenthelp.com we guarantee our customers confidentiality and safety.

Quality and originality

Our team is composed of a group of experts of accredited universities who graduated in Master’s and Ph.D. degree besides being English native speakers. All our professionals have specialized in the different academic field giving us the ability to offer our writing services to students in every field of education. Our writers are always prepared for all types of orders given that they come in all sizes, subjects, and topics. We ensure that we have sufficient professionals in every field so that our customers can receive quality papers and on time. All our papers are scanned for plagiarism by our quality control team for originality.

Customized services

What a better way to meet specified requirements than providing unique customized papers? Most professors or schools set additional requirements to lessen the probabilities of unoriginality in any academic paper. This minimizes the chances of using online-based sources only and pursing readymade essays and papers online. Nevertheless, with customized services such as graduateassignmenthelp.com you do not have to worry about those things. We only produce individually tailored orders that are produced following the provided instruction and not just following the standards of writing. Our experts thoroughly read the requirements before embarking on the research stage of the paper. We guaranteed complete satisfaction as our papers are proofread and edited by quality control agents before uploading the paper on your account.

Free revision

This is a very important service for the production of customized services and every company offering academic writing services should be able to offer this without a hitch. Free alteration for completed work is part of making sure that our customers are fully satisfied with what we offer. We offer free amendments within 14 days of paper submission. Our customer support representatives are always happy to help. You can also get in touch with your writer for the amendment through our messaging system placed in your personal account with us.

We offer professional academic paper writing online services. Our firm believes that students deserve to have a helping hand for them to live a stress-free academic life. It is not very helpful when students receive unreliable writing services. It even makes the matters worse given that the student will worry more about receiving a bogus paper at a very high price. At graduateassignmenthelp.com, we want you to be happy and relaxed as possible. Thus, our services have no hidden charges i.e. what is quoted during order replacement is what you get. And as a result, we guarantee you the following:

Round the clock customer support

It is very important that our clients are able to contact us anytime they need us. Our support agents are very reliable and available throughout the day and night both on the telephone and through our live chats. You can ask out representatives any question about our services or follow up your paper progress with them anytime. Our experts in the customer care department will to clarify any doubts and give detailed information with a happy heart. They will also gladly offer you step by step process of placing an order especially for the new customers who do not know how our services work.

On-time delivery

Our company is proud to say that we meet deadlines at all costs whether the paper is needed in a few hours or in a month; we deliver our customers assignments on time. We understand that most students seek online academic writing services not because they do not have the writing skills required for the paper but because they feel that the allocated time is not enough for them to come up with quality content. It is a very huge disappointment for a student to buy academic services that are never delivered on time.