Questions by Mrdenny

Questions by Mrdenny

Thallium-201, a radioactive isotope used to image the heart, has a half life of 3.05 days. How long would it take for a sample of thallium-201 to decay to 18% of its original activity?

asked May 20, 2020

1 answer

5 votes

28.1k views

Magnesium hydroxide is used in several antacid formulations. When it is added to water it dissociates into magnesium and hydroxide ions. Mg(OH)2(s) Mg2+(aq) + 2OH-(aq) The equilibrium constant at 25°C

asked May 16, 2020

2 answers

0 votes

24.8k views

A geometric sequence has an initial value of 1/2 and a common ratio of 8. Write an exponential function to represent this sequence. A: f(X) = 8· (1/2)^x B: f(X) = 8· (1/2)^-1 C: f(x) = 1/2 ·8^x D: f(x)

asked May 15, 2020

2 answers

1 vote

113k views

How does the proteome of a species contain a larger number of proteins than genes that code for these proteins? A. Some proteins have more than one polypeptide chain B. There are genes that code for several

asked Aug 28, 2019

2 answers

2 votes

174k views

Which architectural element, sometimes seen in early christian longitudinal churches, did not derive from the roman basilica? (one word)?

asked Feb 18, 2019

1 answer

1 vote

93.9k views

Capitalism, socialism, and communism are all what?

asked Dec 18, 2018

2 answers

5 votes

121k views

Please help me solve this

asked Oct 2, 2018

1 answer

0 votes

143k views

What impact did charles martel have on islamic expansion

asked Jul 13, 2018

1 answer

4 votes

218k views

Select the correct answer. Dana has to write a story about a school event. What type of essay will she write? A narrative essay B persuasive essay C expository essay D reflective essay

asked Jan 19, 2018

2 answers

1 vote

46.1k views

What are some of the physical, socialpsychological reasons for malnutrition in seniors.?

asked Aug 22, 2017

1 answer

2 votes

166k views

A statement we accept without proof is called a: A) theorem. B) definition. C) postulate. D) term.

asked Feb 26, 2017

2 answers

2 votes

27.6k views

Bags of 10 sold 2430 apples one day

asked Feb 10, 2016

1 answer

5 votes

4.9k views

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