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Which of the following can be mixed in solution with NH2 to make a buffer? A. NH4Cl B. NaOH C. HNO3 D. NaCl
answered
May 24, 2021
Chemistry
middle-school
2
votes
190k
views
Jaydin had 0.75 of a cake left over from his party. Three of his friends shared the cake equally. How much cake did each friend eat.
answered
May 14, 2021
Mathematics
high-school
5
votes
26.2k
views
Which statement BEST describes the productivity trends on this chart? A) 1950-1973 was not productive due to World War II. B) 1950-2000 was not a productive time for any of the countries. 1973-1990 saw
answered
Apr 10, 2021
History
middle-school
1
vote
58.8k
views
A fast Humvee drove from desert A to desert B. For the first 12 hours, it travelled at an average speed of 185 km/h. For the next 13 hours, it travelled at an average speed of 160 km/h. What was the average
answered
Mar 28, 2021
Physics
college
0
votes
112k
views
What is the answer or this Equation. ‑1/2+(3/4•4/9) =
answered
Feb 17, 2021
Mathematics
middle-school
4
votes
207k
views
Express the difference in the simplest form; 3t^2/5-4t^2/15
answered
Sep 5, 2020
Mathematics
middle-school
5
votes
201k
views
What is the defination of focus of a parabola on a coordinate grid
answered
Apr 29, 2020
Mathematics
high-school
1
vote
133k
views
The diagram shows sexual reproduction. What is forming at point A? flagella sperm zygote egg
answered
Feb 19, 2020
Chemistry
middle-school
3
votes
190k
views
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