darren

This page lists questions and answers that were posted by visitors named darren.

Questions

The following questions were asked by visitors named darren.

Scientists debate about the use of fossils as a tool to determine records of various events, such as the vanishing of the dinosaurs or the origin of our ancestors.discuss the role of fossils in helping scientists develop accurate records of the geologic h...

Write your answer with only positive exponents. y^5y^10

solve for x. 1.25x^2=13 2.2(x-5)^2=3

PRONOUN REFERENCES. EMPLOYEES ARE BEGINING TO TAKE ADVANTAGE OF THE COMPANY'S ATHLETIC FACILITIES. THEY OFFER SQUASH AND TENNIS COURTS, A SMALL TRACK, AND SERVERAL TRAMPOLINES.

what would happen if wheat was no longer a resource to the U.S.

my cummunity helper is a

Why is a systems development process needed? What is the objective of each phase of the SDLC? Describe briefly? How important are feasibility studies. The text mentions four types of feasibility studies: operational, technical, economic, and schedule. In...

all neigh have rights.with these rights come responsibilities.draw a picture of a responsible neighbor.

scientist needs 5L of 12% solution. She has on 10% and 17% solution. How much of each does

A person bought 17 gifts for his nieces and nephews. The gifts were dolls for the nieces at $12.99 each, and robots for the nephews at $10.99 each. The total spent was $198.83. How many of each gift was bought?

What are the concentrations of H3O+ and OH- and what is the pH of a 0.15 M solution of Na2CO3 (at 25 °C).

A 0.040M solution of a weak acid has a pH of 3.02 at 25°C . What is the value of Ka for the acid?

The product of two consecutive positive even numbers is 840. What are the numbers? (Enter solutions from smallest to largest.)

A student presses a book between his hands The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book weighs 30.8 N. The coefficient of static friction between his hands and the book is 0....

mix 35.50 mL of a 0.201 M solution of K2CrO4 with 35.50 mL of a 0.201 M solution of AgNO3, what mass of solid will form?

What volume of a 8.50M Na2CO3 solution would be required to prepare 220.00mL of a 8.20%w/v Na2CO3 solution?

The amount of Fe in a 2.0008 g sample of an iron ore was determined by a redox titration with K2Cr2O7. The sample was dissolved in HCl and the iron brought to a +2 oxidation state. Titration required 26.48 mL of 0.034 M K2Cr2O7. Calculate the iron content...

A 0.4515 g sample of pure CaCO3 was transferred to a 500 mL volumetric flask and dissolved using 6M HCl then diluted to volume. A 50.00 mL aliquot was transferred to a 250mL Erlenmeyer flask and the pH adjusted. Calmagite was used as an indicator the solu...

The purity of a pharmaceutical preparation of sulfanilamide, C6H4N2O2S, can be determined by oxidizing the sulfur to SO2 and bubbling the SO2 through H2O2 to produce H2SO4. The acid is then titrated with standard NaOH. Calculate the purity (%w/w sulfanila...

the gift box fits 2 layers of 10 cubic inches. what is the volume of the box.

Please help.. How to answer if.. 2log8/6 + 2^2log3 - 2log12 Thank you so much

5:11 and 6:12 7:13 and 21:39 8:14 and 24:30 10:20 and 20:30 which pair of ratios form a proportion?

A square prism and square pyramid have the same base and the same surface area. Show that the slant height, l, of the pyramid is l=5/2 x s where s is the length of the base.

The dilation D: (x, y) → (0.2x, 0.2y) has been applied to the polygon S(–5, 5), T(–5, 10), U(5, 15). What are the coordinates of the image points? a S'(–1, 1), T'(–1, 2), U'(1, 3) b S'(–4.8, 5.2), T'(–4.8, 10.2), U'(5.2, 15.2) c S'(–5.2, 4.8), T'(–5.2, 9....

Write an expression modelled by this picture. mc007-1.jpg

Answers

The following answers were posted by visitors named darren.

neighborhood know-how!

the speed of sound in air is 343 m/s. using the relationship: 5280 feet in a mile, 3 feet in a yard and 3.3 feet in a meter. how many meters is this?

Can you please verify my answers if I got em' right? Thanks, They are: 1)C or D (think it's C) 2)B or C (plz help this one) 3)C 4)A 5)B 6)C 7)D 8)A 9)A