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netineya [11]
3 years ago
9

PLEASE HELP! this is a science test/quiz I’m pretty sure the answers are on the bottom if not please comment so I can tell you t

hem

Chemistry
1 answer:
bearhunter [10]3 years ago
4 0
ITS NOT LETTING ME PUT THR ANSWER
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I
Bond [772]

Answer:

about 0.7 g/mL

Explanation:

Density = mass ÷ volume

D = 5.29 g / (12.6 mL - 5.00 mL)

D = 5.29 g / 7.6 mL

D = 0.696052.... g/mL

D = about 0.7 g/mL

5 0
4 years ago
Iron is the most
Georgia [21]

hope this is correct

Answer:

D

Explanation:

Iron is the fourth most abundant element, by mass, in the Earth's crust. The core of the Earth is thought to be largely composed of iron with nickel and sulfur. The most common iron-containing ore is haematite, but iron is found widely distributed in other minerals such as magnetite and taconite.

5 0
4 years ago
1. In apothecaries' measures: 1 scruple = 20 grains, 1 ounce = 480 grains, 1 oz = 28.34 g
laila [671]

Answer:

5.89 g × 10⁶ μg

Explanation:

Step 1: Convert 5.00 scruples to grains

We will use the conversion factor 1 scruple = 20 grains.

5.00 scruple × 20 grain/1 scruple = 100 grain

Step 2: Convert 100 grains to ounces

We will use the conversion factor 1 oz = 480 grains.

100 grain × 1 oz/480 grain = 0.208 oz

Step 3: Convert 0.208 oz to grams

We will use the conversion factor 1 oz = 28.34 g.

0.208 oz × 28.34 g/1 oz = 5.89 g

Step 4: Convert 5.89 g to micrograms

We will use the conversion factor 1 g = 10⁶ μg.

5.89 g × 10⁶ μg/1 g = 5.89 g × 10⁶ μg

4 0
3 years ago
Scientists are studying cell-to-cell communication in a human spleen.
Nady [450]

Answer:

To predict what triggers cell-to-cell communication

Explanation:

Methodologies used for studying cell-to-cell communication includes

1) The reductionist method in which cellular response are measured based on testing specific cellular signals by the introduction of different chemicals, so as to find the source that triggers the response

2) By the application of known chemical reagents enable or block specific areas of an organism's receptors and with the aid of an electrode measure the cellular response based on generated currents of ions or by collecting and analyzing fluid samples from the affected area.

7 0
3 years ago
Which of the following molecules or ions has a bent shape?
Dovator [93]
It’s c I believe but I don’t know
4 0
3 years ago
Read 2 more answers
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