Chemistry Senior High over 1 yearago

to help it decide~のところのto不定詞って何の用法ですか？どうしてこのような訳し方になるのでしょうか？

Softbank Corp. has been amassing big data (to improve mobile S V 0 communications in different areas and time slots throughout the country) (since last year) (to help it decide <where to build wireless base stations>). to help help 原形の構文 和訳 ソフトバンク株式会社は、国全体で異なる地域や時間帯におけるモバイル通信 を改善するために昨年からビッグデータを集めており、それをワイヤレスの基地 を建てる場所を決める判断材料にした。 語句 amass 「蓄積する」、 slot 「時間帯」

Chemistry Senior High over 2 yearsago

高一化学基礎です 以下の問題の求め方を教えてください🙇‍♀️

【5】 次の問いに答えよ。 (1) 82gに水酸化ナトリウム 0.20 molを溶かした溶液の質量パーセント濃度はいくらか。 小数以下第1位まで求めよ。 (2) 0.15mol/Lの水酸化ナトリウム水溶液 3.0Lには､水酸化ナトリウムが何g溶けているか 有効数字2桁で求めよ。 (3) 質量パーセント濃度20%で密度が1.2g/cm² の水酸化ナトリウム水溶液のモル濃度を整数値で求めよ。 3

Chemistry Senior High about 6 yearsago

RHEED法の原理と得られる7つの情報が、この英文に書かれているみたいなのですが、よく分かりません。 分かる方助けてください！🙇‍♂️

INTRODUCTION Reection high-energy electron diHiraction (RHEED) uses a Rnely collimated electron beam with energy of 10-100 keV. The beam irradiates a sample surface with gazing incidence to obtain forward scattered difraction patterms. RHEED enables us to analyze structures of crystal surfaces at atomic levels and also to in situ monitor growth processes of thin films (mo、1988: Ichimiya and Cohen、2004: Peng et al.. 2011). From the arrangement。intensity and profile of the dilraction spots in RHEED patterns as described below in detail、 one can obtain various kinds of information: (1) the periodicity (unit cells) in atomic arrangements. (2) flat- ness of surfaces. (3) sizes of grains/domains of surface structures and microcrystals grown on the surface. (3) epitaxial relation between the grown flms/islands with respect to the substrate. (5) parameters character- izing structural phase transitions. (6) individual atomic positions in the unit cells. and (7) growth styles of thin films and numbers of atomic layers grown. The most important advantages of the method are that it is quite easy to install the RHEED apparatus in Yarious types of vacuum chambers without interfering with other components of apparatuses and to do real- time monitoring during thin-Rlm growths. Because of these advantages.RHEED is nowwidelyusednotonlyin research Iabs of surfaces and thin fims. but also in device production processes in industry Low-energy electron diiraction (LEED、see article Low-ENNERcy ErecroN DirscmoN)。 in which an electron beam of 10-100 eV in energy is irradiated onto a sample surface with nearly normal incidence to obtain back- scattered difraction patterns. is also widely used to analyze the atomic structures of crystal surfaces. Since one has to make the sample face directly to the LEED

Chemistry Senior High almost 7 yearsago

How?

15 1 @)ww Of the following have the same electron arrangement?. 外 36C 40. 3 40Ca+ 人Cl 37CI 19AT 38K+ 20Ca 交*, 3 an 38r oy 幸CL ,拉CT and 39ca ony 恋, 94r and 38KY ony 至CT 9Ar and 43K- only 38caT,提Ar and 33K-ony 41Kー K